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1963 (in "Billboard," describing lead guitar on surf music tracks), back-formation from raunchy. There was a singing group in U.S. c.1960 called the Raunch Hands.
Vulgarity; smut; porn: No obscenities in Glen's Bar. Too tired for raunch/ the latest batch of 8mm raunch (1964+)
To do the sex act with or to; screw: just because she's raunched a few law students (1970s+)
[back formation fr raunchy]