Nouns

(n)nutusually large hard-shelled seed
(n)nuta small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
(n)en, nuthalf the width of an em
(n)crackpot, crank, nut, nut case, fruitcake, screwballa whimsically eccentric person
(n)addict, nut, freak, junkie, junkysomeone who is so ardently devoted to something that it resembles an addiction“a golf addict”, “a car nut”, “a bodybuilding freak”, “a news junkie”
(n)testis, testicle, orchis, ball, ballock, bollock, nut, eggone of the two male reproductive glands that produce spermatozoa and secrete androgens“she kicked him in the balls and got away”

Verbs

(v)nutgather nuts