bill (redirected from eyeshade)

beak

 or bill

Stiff, projecting oral structure of birds and turtles (both of which lack teeth) and certain other animals (e.g., cephalopods and some insects, fishes, and mammals). The term bill is preferred for the beak of a bird, which is composed of upper and lower jaws covered by a horny sheath of skin, with the nostrils on top, usually at the base. The shapes and sizes of bills are adapted for obtaining food, preening, building nests, and other functions; they range from the long, slim bills of nectar-sipping hummingbirds to the sturdy, curved, nut-cracking bills of parrots.

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bill¹

1. a statute in draft, before it becomes law

2. Law See bill of indictment

3. See bill of exchange

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bill²

1. the mouthpart of a bird, consisting of projecting jaws covered with a horny sheath; beak. It varies in shape and size according to the type of food eaten and may also be used as a weapon

2. any beaklike mouthpart in other animals

3. a narrow promontory

4. Nautical the pointed tip of the fluke of an anchor

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bill [bil]

(design engineering)

One blade of a pair of scissors.

(invertebrate zoology)

A flattened portion of the shell margin of the broad end of an oyster.

(naval architecture)

The point at the end of an anchor fluke.

(vertebrate zoology)

The jaws, together with the horny covering, of a bird.

(zoology)

Any jawlike mouthpart.