/rawnch, rahnch/ , n. Informal.
1. smuttiness or vulgarity; crudeness; obscenity: porno magazines and other purveyors of raunch.
2. slovenliness; grubbiness.
3. an earthy, raw musical style derived from blues and gospel: a singer who can go easily from raunch to rock.
[ 1960-65, Amer.; back formation from RAUNCHY ]