From WordNet (r) 3.0 (2006):
beak
n 1: beaklike mouth of animals other than birds (e.g., turtles)
2: horny projecting mouth of a bird [syn: beak, bill, neb,
nib, pecker]
3: a beaklike, tapering tip on certain plant structures
4: informal terms for the nose [syn: beak, honker, hooter,
nozzle, snoot, snout, schnozzle, schnoz]
v 1: hit lightly with a picking motion [syn: peck, pick,
beak]