nut

noun

1.
usually large hard-shelled seed
Derived from:
nut nutty
2.
a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
3.
half the width of an em
en
4.
5.
someone who is so ardently devoted to something that it resembles an addiction
addict freak junkie junky
6.
one of the two male reproductive glands that produce spermatozoa and secrete androgens
bollocks ball ballock bollock egg orchis testicle testis