Top definition
Usually a teenaged girl (but could be a gay boy) who hangs about boys who are into Cars.
Boy Racers 'girlfriend' (usually temporary) who like the boys more than the cars, but only hang round boys with cars.
Comes from... Rota=Rotary Motor, and Whore (of course).
Originates NZ, 2005.
"She is not my girlfriend, she a rotawhore I picked up in my car."
by Colin Campbell October 01, 2006
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