- (informal) A trans woman.
- 2003, Helen Boyd, My husband Betty: love, sex, and life with a crossdresser, page 211:
- Some of them are unaware that t-girls are often heterosexual, and the idea that a genetic woman would enjoy being with a t-girl usually tickles them pink.
- 2008, Lannie Rose, How To Change Your Sex, page 42:
- Sex play with a t-girl is fun. It's like sex play with a sexy girl, except for that extra penis and a tendency to be more uninhibited than it usually is with your average non-t-girl.