1590s, from Middle French desbaucher (“entice from work or duty”), from Old French desbaucher (“to lead astray”), from des- + bauch (“beam”), from Frankish *balko, from Proto-Germanic *balkô, from Proto-Indo-European *bhelg- (“beam, plank”); latter origin of balk.
Evolution of sense unclear; may be literally “to shave/trim wood to make a beam” or may be “to leave/lure someone from a workshop”, Frankish *balko perhaps also meaning “workshop”.
debauch (plural debauches)
- (transitive) to morally corrupt (someone); to seduce
- (transitive) to debase (something); to lower the value of (something)