beak

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beak

1. the projecting jaws of a bird, covered with a horny sheath; bill
2. any beaklike mouthpart in other animals, such as turtles
3. Architect the upper surface of a cornice, which slopes out to throw off water
4. Chem the part of a still or retort through which vapour passes to the condenser
5. Nautical another word for ram
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

beak

[bēk]
(botany)
Any pointed projection, as on some fruits, that resembles a bird bill.
(invertebrate zoology)
The tip of the umbo in bivalves.
(vertebrate zoology)
The bill of a bird or some other animal, such as the turtle.
A projecting jawbone element of certain fishes, such as the sawfish and pike.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in classic literature ?
The Jackal winced, though he was full three seasons old, but you cannot resent an insult from a person with a beak a yard long, and the power of driving it like a javelin.
"All are very good eating," said the Adjutant, clattering his beak.
I was young then," said the Adjutant, clattering his beak significantly.
"No one is all happy from his beak to his tail," said the Adjutant sympathetically.
Look at him perched on that branch wonderin' where it'd be best to put that twig he's got in his beak."
And though the robin did not answer, because his beak was occupied, Mary knew that when he flew away with his twig to his own corner of the garden the darkness of his dew-bright eye meant that he would not tell their secret for the world.
RESTAURANT chains and processed food makers are still using eggs laid by hens crammed into cages in the dark with their beaks cut off.
He and his colleagues have spent years investigating why some of these finches have small beaks while others have large beaks.
Although shrikes have sharply hooked, falcon-like beaks which they jab into the head or neck of their prey, causing partial paralysis, they don't have the large talons possessed by other birds of prey to help them finish the job.
Due to this kind of evolution, traits like beaks and shells evolved independently of each other and primitive turtle species featured differently developed combinations of shells and beaks.
Specifically, use of these convenient seed dispensers may be leading to lengthier beaks in great tits.