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

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.
References in periodicals archive ?
Psittacine beak and feather disease virus nucleotide sequence analysis and its relationship to porcine circovirus, plant circoviruses, and chicken anaemia virus.
He and his colleagues have spent years investigating why some of these finches have small beaks while others have large beaks.
We used factorial design (2 x 3), with two rearing systems (floor or cages) and three methods of beak trimming (hot-blade, infrared and undercutting, the latter serving as the control treatment).
Other early turtles had a partial shell but no beak. Odontochelys, dating to 220 million years ago, had a protective shell on its underside but no upper shell, called a carapace.
The shell and the beak are two important elements of turtle evolution.
Mark explained that this wasn't just the first white beak sedge to be spotted on Astley Moss for 150 years, it was the first one to recorded in the whole of Greater Manchester for a century and a half.
But luckily, only his beak was trapped and, after a "warm" in an RSPCA van, he was able to fly away to freedom.
It was fun to pretend to be a hungry bird, and see how well a bird's beak works to get the food she needs.
A group of teens had attacked her, hacking off part of her beak. The bird was taken to a wildlife sanctuary called Zoo Ave.
During surveillance cystoscopy following TURP, the plastic beak of a 24 Fr resectoscope was incidentally found dislodged in the bladder of our patient.
An artist's illustration of Psittacosaurus, a little dinosaur with a parrot-like beak and bristles on its tail that roamed thick forests in China about 120 million years ago
While wild birds have a red beak by default, a group of domesticated and bred zebra finches have yellow beaks.