1. The act of masturbating.
2. "Jerking" off your clitoris or penis in order to orgasm.
3. May apply to both females and males - slang word.
"I don't have a dick but I can still jerk off!"
"I'm a girl, jerking off is possible."
"I believe that jerking off is an activity all females and males should participate in for the greater good of the world - it also burns calories."