• WordNet 3.6
    • v coo cry softly, as of pigeons
    • v coo speak softly or lovingly "The mother who held her baby was cooing softly"
    • n coo the sound made by a pigeon
    • ***
Webster's Revised Unabridged Dictionary
    • Coo To make a low repeated cry or sound, like the characteristic note of pigeons or doves. "The stockdove only through the forest cooes ,
      Mournfully hoarse."
    • Coo To show affection; to act in a loving way. See under Bill v. i. "Billing or cooing ."
    • ***
Century Dictionary and Cyclopedia
    • coo To utter a low, plaintive, murmuring sound (imitated by the sound of the word) characteristic of pigeons or doves.
    • coo Hence To converse affectionately, like cooing doves; make love in murmuring endearments: commonly in the phrase to bill and coo. See bill, v. i.
    • coo To utter by cooing.
    • coo To call.
    • n coo The characteristic murmuring sound uttered by doves and pigeons.
    • ***
Chambers's Twentieth Century Dictionary
    • v.i Coo kōō to make a sound as a dove: to caress fondly, usually in phrase, 'to bill and coo:'—pr.p. cōō′ing; pa.p. cōōed
    • n Coo the sound emitted by doves
    • ***


In literature:

It is spoken on the coast of middle Oregon, on Coos River and Bay, and at the mouth of Coquille River, Oregon.
"Indian Linguistic Families Of America, North Of Mexico" by John Wesley Powell
As good as Stephenson's answer about the "coo," said Mr. Pope.
"Fifty Years of Railway Life in England, Scotland and Ireland" by Joseph Tatlow
Mr. Robert knew two of his brothers well, and durin' the coo campaign he'd rooted for Nick.
"On With Torchy" by Sewell Ford
Robert, you do the yell like a railway engine, and I'll do the coo-ee like father's.
"Five Children and It" by E. Nesbit
Then Aunt Becky was crying, and the lieutenant's voice cooing through it.
"The House by the Church-Yard" by J. Sheridan Le Fanu
He could hear a soft, cooing murmur of voices from the back stoop.
"The Debtor" by Mary E. Wilkins Freeman
Lady Ver was talking to him in a cooing, low voice after the first act, and the second act, and indeed even when the third act had begun.
"Red Hair" by Elinor Glyn
She blew upon us young ones, and they all died except we two; coo, coo.
"Stories from Hans Andersen" by Hans Christian Andersen
But you're like a flock of cooing doves, you Washington girls.
"Contrary Mary" by Temple Bailey
Arrayed on the long-backed roofs the fan-tails sidled, cooed, and blinked in the sun.
"Boy Woodburn" by Alfred Ollivant
It seemed too good to hear that cooing voice in my ear.
"The Chief Legatee" by Anna Katharine Green
I daresay, if the truth were known, they are billing and cooing in each other's arms at this moment.
"Phineas Finn" by Anthony Trollope
There the great clouds shall go lazily by, Coo!
"More Songs From Vagabondia" by Bliss Carman and Richard Hovey
It was a cooing of professional concern, true to an ideal, to a necessity.
"Hilda" by Sarah Jeanette Duncan
Even the widow Larkum's baby cooed softly until you were out of sight.
"Medoline Selwyn's Work" by Mrs. J. J. Colter
That is to say, that he's expected back in town for the 'season,' as the Cooing Column of the paper says.
"The Treasure of Heaven" by Marie Corelli
Grape vines grow over their walls, and doves sit and coo on the flat roofs.
"The Good Shepherd" by Anonymous
She left him to coo with the pigeons all night, which he did not much like, and he was afraid to speak or call, for fear of the sergeants.
"One Hundred Merrie And Delightsome Stories" by Various
Suddenly he started from his pillow; and again he heard that mellow laugh, warm and rich as the cooing of doves on sunlit eaves.
"A Pair of Patient Lovers" by William Dean Howells
Their continuous cooing rasped Aline's nerves.
"The Heather-Moon" by C. N. Williamson and A. M. Williamson

In poetry:

Anew I listen to the low
Fond cooing of the dove,
And smile unto myself to know
I still am loved and love.
"A Birthday" by Alfred Austin
"Oh, JANE, how true I am to you!
How true you are to me!
And how we woo, and how we coo!
So fond a pair are we!
"The Cunning Woman" by William Schwenck Gilbert
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
Ripple, ripple, little voice;
When I hear you, I rejoice.
When you cease to crow and coo,
Then my heart grows silent too.
"To Beatrice Stuart--Wortley Ætat" by Alfred Austin
Unfettered by domestic vow,
Cuckoo, proclaim your vagrant loves,
And coo upon the self-same bough,
Inseparable turtle-doves.
"The Door Of Humility" by Alfred Austin
But Mr Dove is much too keen
To let a single bird be seen;
To show the pigeons would not do,
And so he simply paints the coo.
"Post-Impressionism" by Bert Leston Taylor

In news:

Swamped By Sandy, Long Island Power Authority COO Michael Hervey Resigns.
Green Infra COO Leaves Company as Wind Growth Sputters.
Northstar's COO in quail hunt.
Fiat Industrial Names Tobin COO Already Reported.
Philadelphia Insurance CEO Steps Aside, COO to Take Over.
Fabrice Egros has Been Appointed COO , Pharmaceutical Director and Board Member of NovaMedica, a Novel Pharmaceutical Company.
Snatch Shares of FTI Cheaper Than the COO Did.
Sheryl Sandberg, Facebook's COO , has sold a second batch of Facebook shares, Reuters reports.
Rosenbusch becomes president, COO of GCCA.
U.K.'s Channel 5 Promotes Paul Dunthorne to COO Post.
Patrick Bannigan joined American Century Investments as executive vice president and COO , confirmed spokesman Chris Doyle.
The Rapid COO describes how Walker ballot proposal affects service.
Chrimes named COO of MIG Capital Europe.
Ford names Fields new COO .
Mark Fields now COO .

In science:

Coo] Cooperstein, B. N., Minimal degree for a permutation representation of a classical group, Israel J.
Finite simple groups and localization
The capability to produce a 3 A, 100 keV electron beam was demonstrated during var ious tests of the electron coo ler.
Present Performance of Electron Cooling at Cosy-J\"ulich
These oscillations, which do not stop until the end of the coo ling time, obviously are the cause for the poor bunching efficiency in this case.
Present Performance of Electron Cooling at Cosy-J\"ulich
In [4-6] for a spectral problem considered in , but for multipoint with discontinuous coofficients, the notion of regularity is given by M.L.
Almost regularity conditions of spectral problems for a second order equation
The annealing in Ar under atmospheric pressure (which is correlated to the appearance of antiferromagnetic CoO impurity [Fig. 2(b)]) does not significantly change the value of the ac susceptibility. A significant decrease of the ac susceptibility can be observed after high-pressure oxygen annealing.
Structural and magnetic properties of transition metal substituted ZnO
The energy ejected by an AGN can cancel radiative cooing of the hot gas and may prevent development of a cooling flow in the central region of a group or a cluster.
Influence of AGN Outbursts on the Surrounding Galaxies
Optical (COO) CDMA systems which guarantee errorless communication in an ideal channel and propose an MUD scheme for a special class of these codes perform much better.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
We will also compare these codes to BWBE and such codes with an over-loading factor of about ͸ʹΨ that can be decoded practically show that as the over-loading factor increases, the proposed COW/COO codes an over-loading factor of almost ͳͷ͸Ψ that need to be discovered.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
COW and COO codes with high percentage of over-loading factor.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
For developing COW and COO codes (matrices), we first discuss an intuitive geometric interpretation and then develop the codes mathematically.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
Theorem 3 If there is an ݉ ൈ ݊ COW matrix for the wireless CDMA, then there is an We would like to extend the results to optical CDMA, i.e., COO matrices. ݉ ൈ ݊ COO matrix for the optical CDMA.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
The theorems for COO matrices are similar to the previous theorems related to COW matrices. In addition, there are a few extra algorithms for the construction of COO Theorem 4 If ۲ is an ݉ ൈ ݊ COO matrix, then ۾۪۲ is also a ݇݉ ൈ ݇݊ COO matrix, matrices as described below. where ۾ is an invertible ݇ ൈ ݇ ሼͲǡͳሽ-matrix.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
Corollary 3 If we set ۾ ൌ ۷ in the above theorem, then the generated COO matrices The proof is similar to the proof of Theorem 1.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
Example 3 Using Theorem 5, we get a ͸Ͷ ൈ ͸ͻ COO matrix with the structure discussed in the theorem.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems
COO codes. above arguments, we can obtain similar upper bounds for COO codes.
A Class of Errorless Codes for Over-loaded Synchronous Wireless and Optical CDMA Systems