Nut

Birne

(slang: the head)

Ei

(slang: testicle)

Halbgeviert

(typography: unit equal to half of the height of the type in use)

Irre

(slang: insane person)

Irrer

(slang: insane person)

Mutter

(that fits on a bolt)

Nuss

(hard-shelled fruit)

Nuss

(slang: testicle)

Nüßli

(hard-shelled fruit)

Obersattel

(musical instruments: small piece that holds the strings at the proper spacing)

Sattel

(musical instruments: small piece that holds the strings at the proper spacing)

Spinner

(slang: insane person)