1. a. The horny, projecting structure forming the mandibles of a bird, especially one that is strong, sharp, and useful in striking and tearing; a bill. b. A similar structure in other animals, such as turtles, insects, or fish.
2. A usually firm, tapering tip on certain plant structures, such as some seeds and fruits.
3. A beaklike structure or part, as: a. The spout of a pitcher. b. A metal or metal-clad ram projecting from the bow of an ancient warship.
4. Informal. The human nose.
5. Chiefly British. a. A schoolmaster. b. A judge.