From WordNet (r) 3.0 (2006):
nut
n 1: usually large hard-shelled seed
2: Egyptian goddess of the sky
3: a small (usually square or hexagonal) metal block with
internal screw thread to be fitted onto a bolt
4: half the width of an em [syn: en, nut]
5: a whimsically eccentric person [syn: crackpot, crank,
nut, nut case, fruitcake, screwball]
6: someone who is so ardently devoted to something that it
resembles an addiction; "a golf addict"; "a car nut"; "a
bodybuilding freak"; "a news junkie" [syn: addict, nut,
freak, junkie, junky]
7: one of the two male reproductive glands that produce
spermatozoa and secrete androgens; "she kicked him in the
balls and got away" [syn: testis, testicle, orchis,
ball, ballock, bollock, nut, egg]
v 1: gather nuts