Green’s Dictionary of Slang

bate n.1

[abbr. SE masturbate + ? SE bait]

(US) an act of masturbation, performed in private but filmed by a webcam.

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[US]Salon.com 21 Oct. 🌐 Sometimes all they get is a quick bra flash; other times they get a full-on “bate” (when a girl masturbates on camera).

In compounds

bate-pig (n.)

an obsessive masturbator.

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www.onania.org/asm 28 May 🌐 He tries to pleasure his penis for a minimum of 4 hours every day and 7-10 hours a day over the summer. He considers himself a total fucking batepig [Simes:DLSS].