• A sea-urchin
    A sea-urchin
  • WordNet 3.6
    • n urchin poor and often mischievous city child
    • ***

Additional illustrations & photos:

Test of sea-urchin Test of sea-urchin

Webster's Revised Unabridged Dictionary
    • Urchin (Zoöl) A hedgehog.
    • Urchin A mischievous elf supposed sometimes to take the form a hedgehog. "We 'll dress [them] like urchins , ouphes, and fairies."
    • Urchin A pert or roguish child; -- now commonly used only of a boy. "And the urchins that stand with their thievish eyes
      Forever on watch ran off each with a prize."
      "You did indeed dissemble, you urchin you; but where's the girl that won't dissemble for an husband?"
    • Urchin (Zoöl) A sea urchin. See Sea urchin.
    • Urchin One of a pair in a series of small card cylinders, arranged around a carding drum; -- so called from its fancied resemblance to the hedgehog.
    • a Urchin Rough; pricking; piercing. "Helping all urchin blasts."
    • ***
Century Dictionary and Cyclopedia
    • n urchin A hedgehog. See hedgehog and Erinaceus.
    • n urchin A sea-urchin.
    • n urchin An elf; a fairy: from the supposition that it sometimes took the form of a hedgehog.
    • n urchin A roguish child; a mischievous boy.
    • n urchin One of a pair of small cylinders covered with card-clothing, used in connection with the card-drum in a carding-machine.
    • urchin Elfish; mischievous.
    • urchin Trifling; foolish.
    • ***
Chambers's Twentieth Century Dictionary
    • n Urchin ur′chin a hedgehog: a mischievous child, an elf, fairy
    • adj Urchin elfish, mischievous
    • ***


Webster's Revised Unabridged Dictionary
OE. urchon, irchon, a hedgehog, OF. ireçon, eriçon, heriçon, herichon, F. hérisson, a derivative fr. L. ericius, from er, a hedgehog, for her,; akin to Gr. chh`r. Cf. Herisson


In literature:

A cherub-faced urchin, playing cards, and deep in his play, was humming abstractedly the chorus of a catchy song.
"Boy Woodburn" by Alfred Ollivant
He took the smiling urchin in his hands, and raising it upon his shoulder, placed his ear to its side.
"Tales of the Chesapeake" by George Alfred Townsend
The market was in the hands of some neighbouring urchins, my habitual providers.
"Social Life in the Insect World" by J. H. Fabre
While he was shut up in his study, little Henry, a mischievous, wild urchin, had to be kept quiet.
"The Argosy" by Various
The roaring and crackling heat drove venturesome urchins back.
"Old Kaskaskia" by Mary Hartwell Catherwood
A small ragged urchin asked him the time, and that casual touch of communalism made him feel more at home.
"King John of Jingalo" by Laurence Housman
Some had thrown her a few pence for which a couple of urchins were groping on the ground.
"Madame Flirt" by Charles E. Pearce
The Boy disliked this tow-head urchin from the moment they met.
"The Southerner" by Thomas Dixon
So the urchin lived, and ever after paced gravely before its friends.
"The Leicestershires beyond Baghdad" by Edward John Thompson
With these the sagacious urchin sometimes astonished his little mother.
"Confessions of Boyhood" by John Albee

In poetry:

Are you weary of the searching
For the Root of ill,
That you, like an idle urchin,
Play at sitting still ?
"The Patrol And The Gold-Digger" by Adam Lindsay Gordon
When I was daft (as urchins are),
And full of fairy lore,
I aimed an arrow at a star
And hit - the barnyard door.
"Aspiration" by Robert W Service
Two rosy urchins near him played,
Or watched, entranced, the shapely ships
That with his knife for them he made
Of elder slips.
"The Letter L" by Jean Ingelow
And never felt he greater pride,
And never did he look so gay,
As when the little urchins strove
To make him partner in their play.
"The Grandfather's Departure" by Matilda Betham
Pleas'd Cupid heard, and check'd His Mother's Pride:
And who's blind now, Mamma? the Urchin cry'd.
'Tis Cloe's Eye, and Cheek, and Lip, and Breast:
Friend Howard's Genius fancy'd all the rest.
"Venus Mistaken" by Matthew Prior
Just a simple little picture, yet its charm is o'er me still,
And again my boyish spirit seems to glow,
And once more a barefoot urchin am I wandering at will
Down that little country road I used to know.
"The Meadow Road" by Joseph C Lincoln

In news:

Devotees know these sketched figures almost as if they were relations: the lean urchin approaching his shocked overseer with an empty bowl, begging for more.
View full size Bob Keefe as "Sir", with urchins Sophie Longo, Lilly Saunders, and Ashleigh Nagy.
Visual texture, such as the wicker urchin light fixture, and rich rugs add softness to the six-bedroom house.
The Department of Fish and Wildlife announced recently that there will be an April 22 lottery to award nine commercial sea urchin permits.
I'm always seeing my father among the gaggles of urchins who invariably garnish old pictures of Quai de la Batte or Ruelle Bodeux or the Trô Navai.
DEI Holdings' Boom brand has announced the upcoming launch of the new Urchin speaker.
Boom to Launch Urchin Speaker.
Google Jan 20 said it is closing or open-sourcing a handful of additional products, including its Picnik photo editor, Message Continuity disaster recover app and Urchin analytics software.
Google Shuttering Picnik, Urchin , Sky Map Products.
Diving for sea urchins off the coast of southern California is just another day in the life for the The Perennial Plate, a web series about sustainable food created by Daniel Klein and Mirra Fine.
Sea urchins are harvested by divers in Oregon's nearshore waters at depths of 15 to 75 feet.
Six-Footer Spotted Wednesday by Urchin Diver.
Lorna Yee's combines the spiny sea urchin with delicate pasta .
This sheep goes nuts after a nasty little urchin tosses a coconut at its head.
Uni, or sea urchin, is a small creature with a spiny shell.

In science:

Zeller RW, Griffith JD, Moore JG, Kirchhamer CV, Britten RJ, et al. (1995) A multimerizing transcription factor of sea urchin embryos capable of looping DNA.
Concentration and Length Dependence of DNA Looping in Transcriptional Regulation
For instance, the extinction intensity of sea urchins during the end-Cretaceous event is not correlated with the number of species in a genus, and not even with geographical range [188].
Biological Evolution and Statistical Physics
While in this regime one also finds various kinds of orderings, eventually the rods tend to approach a spherical configuration that resembles a “sea urchin” [see Fig. 2(d)], as a approaches its smallest possible value a0 that is set by the thickness of the rods.
Orientational Ordering and Dynamics of Rodlike Polyelectrolytes
The spermatozoa of many organisms swim to the ovum, sometimes in challenging environments such as tidal pools in the case of sea urchins or cervical mucus in the case of humans .
The hydrodynamics of swimming microorganisms
Recently, sea urchin sperm cells were observed to arrange into periodic vortices [171].
The hydrodynamics of swimming microorganisms