beak

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The bill of a bird, especially one that is strong and curved, such as that of a hawk or a finch.
• noun A similar structure in other animals, such as turtles, insects, or fish.
• noun A usually firm, tapering tip on certain plant structures, such as some seeds and fruits.
• noun A beaklike structure or part, as.
• noun The spout of a pitcher.
• noun A metal or metal-clad ram projecting from the bow of an ancient warship.
• noun Informal The human nose.
• noun A schoolmaster.
• noun A judge.

from The Century Dictionary.

• In cock-fighting, to seize or strike with the beak.
• noun A magistrate; a judge; a policeman.
• noun In zoology, the rostrum, snout, muzzle, jaws, mandibles, or some similar part of an animal.
• noun Anything ending in a point like a beak.
• noun A gas-burner having a round smooth hole of an inch in diameter; a bird's-mouth.
• noun A beak-iron (which see).
• To ram (a ship) with the beak or prow so as to penetrate the hull in an endeavor to sink it.
• noun In the shells of the Brachiopoda (Molluscoidea) and Pelecypoda (Mollusca), the projecting, usually arched, part of the valves; the initial part of the shell about which accretions by growth have been added unequally.
• noun Specifically, the mouthpiece of instruments like the clarinet and some varieties of flageolets or direct flutes.

from the GNU version of the Collaborative International Dictionary of English.

• noun The bill or nib of a bird, consisting of a horny sheath, covering the jaws. The form varies much according to the food and habits of the bird, and is largely used in the classification of birds.
• noun A similar bill in other animals, as the turtles.
• noun The long projecting sucking mouth of some insects, and other invertebrates, as in the Hemiptera.
• noun The upper or projecting part of the shell, near the hinge of a bivalve.
• noun The prolongation of certain univalve shells containing the canal.
• noun Anything projecting or ending in a point, like a beak, as a promontory of land.
• noun (Antiq.) A beam, shod or armed at the end with a metal head or point, and projecting from the prow of an ancient galley, in order to pierce the vessel of an enemy; a beakhead.
• noun (Naut.) That part of a ship, before the forecastle, which is fastened to the stem, and supported by the main knee.
• noun (Arch.) A continuous slight projection ending in an arris or narrow fillet; that part of a drip from which the water is thrown off.
• noun (Bot.) Any process somewhat like the beak of a bird, terminating the fruit or other parts of a plant.
• noun (Far.) A toe clip. See Clip, n. (Far.).
• noun Slang, Eng. A magistrate or policeman.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A rigid structure projecting from the front of a bird's face, used for pecking, grooming and for eating food.
• noun A similar structure forming the jaws of an octopus.
• noun nautical The metal point fixed on the bows of a war galley, used as a ram.
• noun slang A justice of the peace, magistrate, headmaster or other person of authority.
• noun slang The human nose, especially one that is large and pointed.
• verb transitive strike with the beak.
• verb transitive seize with the beak.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun informal terms for the nose
• noun horny projecting mouth of a bird
• noun a beaklike, tapering tip on certain plant structures
• noun beaklike mouth of animals other than birds (e.g., turtles)
• verb hit lightly with a picking motion