Definitions:
a fruit consisting of a hard or tough shell around an edible kernel

a small flat piece of metal or other material, typically square or hexagonal, with a threaded hole through it for screwing on to a bolt as a fastener

a crazy or eccentric person

a person's head

a man's testicles.

the fixed ridge on the neck of a stringed instrument over which the strings pass

butt (someone) with one's head

gather nuts

the sky goddess, thought to swallow the sun at night and give birth to it in the morning.

(in the uk) national union of teachers.