• WordNet 3.6
    • v moo make a low noise, characteristic of bovines
    • n moo the sound made by a cow or bull
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Cows are incapable of putting their lips together to make sounds like humans, so they are actually saying "OOOOO" instead of "Moo."
    • a., adv., & n Moo See Mo.
    • n Moo The lowing of a cow.
    • v. i Moo To make the noise of a cow; to low; -- a child's word.
    • ***
Century Dictionary and Cyclopedia
    • moo To utter the characteristic cry of a cow; low.
    • moo To make a noise like lowing.
    • n moo The low of a cow; the act of lowing.
    • moo An obsolete form of mo.
    • ***
Chambers's Twentieth Century Dictionary
    • v.i Moo mōō to low like a cow.
    • ***


  • Ogden Nash
    “The cow is of the bovine ilk: One end is moo, the other, milk.”


Webster's Revised Unabridged Dictionary
Of imitative origin
Chambers's Twentieth Century Dictionary


In literature:

The calf ran to meet her but the mother just stood in the water and mooed.
"Old Rail Fence Corners" by Various
Nothing but the good old-fashioned 'moo-cow' style could possibly have suited him.
"The Making Of A Novelist" by David Christie Murray
They'd moo after you.
"Joan of Arc of the North Woods" by Holman Day
Cows have as much affection for their young as have other animals, and it is piteous to hear them mooing when deprived of their calves.
"Stories of Animal Sagacity" by W.H.G. Kingston
Presently the loud mooing of a bull walrus was heard.
"Fast in the Ice" by R.M. Ballantyne
As she put him down upon his bed she heard the mooing of the wild cattle.
"The Tree-Dwellers" by Katharine Elizabeth Dopp
Listen to this: M-m-m-moo!
"Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)" by Various
Or if I moo like a cow, I must moo until sunset.
"Chimney-Pot Papers" by Charles S. Brooks
The great stock-yards lie to the east where you hear those sad sounds: that low mooing as of innumerable herds, waiting slaughter.
"This Simian World" by Clarence Day
The horses hurried ahead; the cows began to trot, the bell cow sending out an eager Moo-oo!
"Lisbeth Longfrock" by Hans Aanrud

In poetry:

Th' child cries i'th cradle;
Th' cake bruns o'th stone;
Th' cow moos i'th milkin' gap,
At th' end o'th loan.
"Cradle Song" by Edwin Waugh
The pigeons coo,
The moolies moo,
Hey troli-loli lo.
The sun is up, the sun is up,
Sing merrily we, the sun is up.
"The Sun Is Up" by Eliza Lee Follen
The Moo Cow's tail is a piece of rope
All ravelled out where it grows;
And it's just like feeling a piece of soap
All over the Moo Cow's nose.
"Moo Cow Moo" by Edmund Vance Cooke
And the Moo Cow Moo has lots of fun
Just switching his tail about,
But if he opens his mouth, why then I run,
For that's where the Moo comes out.
"Moo Cow Moo" by Edmund Vance Cooke
The Moo Cow Moo has deers on his head,
And his eyes stick out of their place,
And the nose of the Moo Cow Moo is spread
All over the Moo Cow's face.
"Moo Cow Moo" by Edmund Vance Cooke
As I rode in to Beetaloo,
I met a man whose nose was blue;
And when I asked him how he got
A nose like that, he answered, "What
Do bullocks mean when they say 'Moo'?"
So I rode on to Beetaloo.
"The Traveller" by C J Dennis

In news:

Last weekend for Maggie Moo 's.
The Maggie Moo 's ice cream store in West Des Moines is closing next week.
Hey Moo Moo , Molly's page number is 237690.
Esar Met, right, charged with killing 7-year-old Hser Ner Moo in 2008, begins the seven-day preliminary hearings at Matheson Courthouse in Salt Lake City on Wednesday, Nov 7, 2012, before Judge William Barrett.
Oink and Moo Burgers and BBQ.
South Hamilton — Muriel E (" Moo ") Perry, age 86, of South Hamilton, wife of the late George W ("Scundi") Perry, Jr, with whom she shared 59 years of marriage, died Saturday, October 13.
Not with MOO .com's new NFC-enhanced cards.
MOO .com CEO Richard Moross announced the acquisition in a Thursday blog post on
Moo (www. moo .com) is moving further into the digital world today, with its purchase of
Invented Sassy Cow Creamery's latest sensation, Tira- Moo -Su.
Michigan's Best: MOO -Ville near Nashville offers a mini-vacation instead of just ice cream.
Zeke Jennings A family enjoys ice cream while sitting on a picnic table outside of MOO -Ville Creamery on M-66 just south of Nashville.
Gonzo's Radio Show: MOO -ville Creamery reaction, Toby Keith contest winners, plus Five For Fighting, Boyz II Men tickets and more.
MOO Milk Film from WAGM-TV on Vimeo.
New Moo -Bile App Helps Keep Cows Cool And Farmers Updated.

In science:

To get the second assertion of Theorem 1.1, we then use a theorem of Moore [Moo] giving sufficient conditions for a quotient space of the sphere S2 to be homeomorphic to the sphere.
Scaling limits of bipartite planar maps are homeomorphic to the 2-sphere
At this point, we use the following theorem of Moore [Moo, page 416] (see also [Thu] for a previous application of this theorem, and in particular Figure 10, page 376 of [Thu]).
Scaling limits of bipartite planar maps are homeomorphic to the 2-sphere
Moo] Moore, R.L. (1925) Concerning upper-semicontinuous collections of continua.
Scaling limits of bipartite planar maps are homeomorphic to the 2-sphere
Temperature dependences of MOO (x = 0) for various L are shown in Fig. 2(a).
Dilution effect in correlated electron system with orbital degeneracy
An extrapolated value of MOO (x = 0) toward T = 0 is close to 0.5 which indicates that the type-(II) degeneracy is lifted and the OO with the momentum Q = (p, p, p) is realized.
Dilution effect in correlated electron system with orbital degeneracy