• One can generally pass around obstructions like this on the trail
    One can generally pass around obstructions like this on the trail
  • WordNet 3.6
    • n obstructer any structure that makes progress difficult
    • n obstructer someone who systematically obstructs some action that others want to take
    • ***
Webster's Revised Unabridged Dictionary
    • n Obstructer One who obstructs or hinders.
    • ***
Century Dictionary and Cyclopedia
    • n obstructer One who or that which obstructs, hinders, or retards. Also obstructor.
    • ***
Chambers's Twentieth Century Dictionary
    • ns Obstructer one who obstructs
    • ***


  • Hsi-Tang
    “Although gold dust is precious, when it gets in your eyes it obstructs your vision.”


Chambers's Twentieth Century Dictionary
L. obstruĕre, obstructumob, in the way of, struĕre, structum, to pile up.


In literature:

Once on the southern side, there is nothing to obstruct or further delay them.
"The Death Shot" by Mayne Reid
We had just cleared one of the buttes that had hitherto obstructed our view of the great gap.
"The Scalp Hunters" by Mayne Reid
I moved to his rear, but he said curtly that I was obstructing the light.
"Campaigns of a Non-Combatant," by George Alfred Townsend
To obstruct the progress, motion, or effect of.
"Orthography" by Elmer W. Cavins
Yet the obstruction being an obstruction of the real action of Nature is, if not real, at least actual and immediate.
"Essays Towards a Theory of Knowledge" by Alexander Philip
Besides, the action of frost and water and vegetation has a continual operation to obstruct open ditches.
"Farm drainage" by Henry Flagg French
It is the intermittent or obstructed current that gives power.
"Little Journeys to the Homes of the Great, Vol. 13" by Elbert Hubbard
The good steed, when it leaped the obstruction, must assuredly have sprained its front leg.
"The Day of Wrath" by Maurus Jókai
Obstruction, rescue, or aid toward escape was fined in the sum of five hundred dollars.
"History of the United States, Volume 3 (of 6)" by E. Benjamin Andrews
The unexpected obstruction from the calm now added force to their arguments.
"Ran Away to Sea" by Mayne Reid
Heretofore the big guns had been able to sweep such obstructions away.
"The Story of the Great War, Volume V (of 12)"
He moved to one side so that he could see the obstruction.
"Four Young Explorers" by Oliver Optic
The uncertainty for some time obstructed the progress of the place.
"The History of Tasmania, Volume I (of 2)" by John West
These obstructions are his illusions, his prejudices, his errors, his ignorance.
"Ancient and Modern Celebrated Freethinkers" by Charles Bradlaugh, A. Collins, and J. Watts
What is the effect when the nasal passages are obstructed?
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
Banks' force was so large that the most the enemy could do was to delay his advance by burning bridges and obstructing the river.
"The Greater Republic" by Charles Morris
With a splintering crash, the bar went through an obstruction.
"Astounding Stories, August, 1931" by Various
A snap and a whirl, and the wheels of the foremost ore-car caught the obstruction.
"Harper's Round Table, October 22, 1895" by Various
Even her view of the stars was confined and obstructed.
"On the Heights" by Berthold Auerbach
Practically it was most difficult, on account of both sea obstructions and the shore batteries.
"Current History, Vol. VIII, No. 3, June 1918" by Various

In poetry:

The outgrowth of his youthful ken
No cold obstruction fetters;
He quickly learns the "types" of men,
And all the world of "letters."
"The Happy Printer" by Henry Austin Dobson
And when estranged are all earth's friends
And the gloom of rejection still tends
To obstruct my way, Thou wilt send
Me Thy comforter from above.
"My Prayer" by Samuel Alfred Beadle
A Health to the Patriot, whoever he be,
From Taxes and Debts who his Country would free;
May so noble a Scheme ev'ry where meet Applause;
No Party, or Faction, t'obstruct the good Cause.
"An Antigallican Song" by Cornelius Arnold
—- Ours is a wholesome air;
You'd better go to Town and practise there:
For me, I've no obstructions to remove;
I'm pretty well, I thank your father Jove,
And physic is a weak ally to love.
"Daphne to Apollo. Imitated From The First Book Of Ovid's Metamorphosis" by Matthew Prior
Just so our course we steer,
In youth's expanding year,
Culling fresh sweets from ev'ry flower that blows;
Nor briars obstruct our way,
For ever brisk and gay,
Heedless of ev'ry thorn we pluck the rose.
"To The Bee" by Elizabeth Bath
Know'st thou the mountain, and its cloudy bridge?
The mule can scarcely find the misty ridge;
In caverns dwells the dragon's olden brood,
The frowning crag obstructs the raging flood.
Know'st thou it well?
"Mignon" by Johann Wolfgang von Goethe

In news:

Mount Rainier rangers are hoping that the cloud-obstructed northeast side of the mountain will clear long enough Sunday for them to retrieve the body of a fellow ranger killed in a horrific fall down a glacier Thursday.
Corporate icon Martha Stewart was convicted on nine counts, including charges of securities fraud and obstruction of justice.
AUSTIN (AP) — Texas freshman running back James Henry has been charged with two felony counts of obstruction and tampering with evidence, making him the sixth Longhorns player arrested since June.
Meanwhile, the Fling offers sweet control, obstructs less of the screen, and costs less.
Killer Whale Mural at Boston's Planet Self Storage May Be Obstructed by New Construction.
Randy Metcalf/The Explorer, On Ski Valley's ski lift, riders have a view of Tucson, which is no longer obstructed by anything more substantial than the skeletons of pine trees.
Letter carrier pleads guilty to obstructing mail.
Will Republicans continue to obstruct or will they do the right thing.
When they do occur, they are important because some require that the surgeon perform a tracheotomy to prevent a fatal airway obstruction.
Dylan Ward, who has been charged with obstruction of justice in the mysterious death of Robert Wone , was released this morning.
Comprehensive overview covers symptoms, causes, treatment of central and obstructive sleep apnea .
CPAP, short for continuous positive airway pressure, serves as the main treatment for obstructive sleep apnea , a potentially life-threatening condition.
SAN FRANCISCO — A federal appeals court will hear Barry Bonds' appeal of his obstruction of justice conviction early next year.
Gutierrez was charged with six separate offenses Saturday night including his third DWI, not having a drivers license on him, resisting arrest and obstruction/retaliation.
WASHINGTON — A senior aide to Gary Condit acknowledges that two of the congressman's longtime staff members appear to be key figures in a federal obstruction-of-justice investigation that began after the disappearance of Chandra Levy.

In science:

Note that there is no obstruction to doing this because every edge label in ∆ is even.
Automorphisms and abstract commensurators of 2-dimensional Artin groups
The obstruction class ob(E ; k E can be extended to a deformation ˜E over ˜A.
Moduli schemes of generically simple Azumaya modules
Unlike Lie algebras, not every Lie algebroid admits an integration, see for a description of the obstructions.
Generalized complex structures and Lie brackets
So the obstruction to geometrization vanishes.
Obstructions for generalized graphmanifolds to be nonpositively curved
The obstruction to lifting f to SL2Fq is an element of H 2 (G, Z/2Z), which vanishes as f extends over M .
Finite covers of random 3-manifolds
This proves that self and south avoidance present the same topological obstruction to release of link Lk .
DNA Elasticity : Topology of Self-Avoidance
This proves that self and south avoidance both present the same topological obstruction to link release.
DNA Elasticity : Topology of Self-Avoidance
These classes represent the obstruction to globally extending locally defined bundles, as it is the case for Hamiltonian bundles.
Gerbes, 2-gerbes and symplectic fibrations
For n ≥ 2, such a geometric obstruction theory has been defined by Tsemo .
Gerbes, 2-gerbes and symplectic fibrations
When the class is not integral, we define a flat gerbe C ′ (ω ) bounded by the sheaf of locally constant IR-functions defined on F which represents the obstruction of [ω ] to be zero.
Gerbes, 2-gerbes and symplectic fibrations
We can construct from this gerbe, another gerbe C (ω ) bounded by the sheaf of locally constant T 1 -functions defined on F , which represents the obstruction of [ω ] to be integral (see 2.4).
Gerbes, 2-gerbes and symplectic fibrations
Let p : P → N be a symplectic bund le whose typical fiber is (F, ω ), there exists a gerbe C 1 F (ω ) whose classifying cocycle c1 F (ω ) represents the obstruction of the symplectic bund le p to have a Hamiltonian reduction.
Gerbes, 2-gerbes and symplectic fibrations
There exists a 2-gerbe C 2 F (ω ) whose classifying cocycle c2 F (ω ) represents the obstruction of the class [ω ] to be extended to P .
Gerbes, 2-gerbes and symplectic fibrations
In , McDuff defines a discrete subgroup H 1 (F, Pω ) of H 1 (F, IR) and a class in H 2 (N , H 1 (F, Pω )) which is the obstruction to have a H ams -reduction, that is to obtain a closed connection form.
Gerbes, 2-gerbes and symplectic fibrations
This condition is satisfied if H is the subgroup H ams , and G is S ymp(F, ω ) Then there exists a gerbe CH , whose classifying cocycle represents the obstruction to reduce G to H .
Gerbes, 2-gerbes and symplectic fibrations