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A powerful type of Devil in the Dungeons and Dragons roleplaying game.
Pit Fiends are among the most powerful creatures in the Nine Hells.
by Jeff Chislett May 17, 2004
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n. A person (especially a woman) who sweats from the underarms profusely and often smells offensively.

v. 1. To sweat profusely from the underarms. 2. To smell like a pit fiend.
That bitch is fine, but she a pit fiend.
by Miryam Websta April 26, 2004
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A woman who becomes violently angry and crazed while ragging, as if her cooter were possessed by some powerful evil force.
Guy 1: My girlfriend's all PMSy and been throwing shit and screaming and crying a lot lately.
Guy 2: Definitely a pit fiend. I'd run.
by ShaggyShaggs May 29, 2005
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