RhymeZone: tranny definitions

Definitions of tranny:

noun: (slang, chiefly derogatory, offensive) A transsexual, transgender, or transvestite person, usually a trans woman.
noun: (colloquial, Commonwealth) A transistor radio.
noun: (colloquial, automotive) A mechanical transmission, a gearbox.
noun: (colloquial) A transformer.
noun: (slang, skateboarding) A transition between moves.

(Definitions from Wiktionary)