hip"seed pod" (especially of wild rose), O.E. heope, hiope, from P.Gmc. *khiup- (cf. dial. Norw. hjupa, O.H.G. hiafo, Ger. hiefe, O.E. hiopa "briar, bramble").
hip"informed," 1904, apparently originally in black slang, probably a variant of hep, with which it is identical in sense, though it is recorded four years earlier. Hip-hop music style first recorded 1982.
hipexclamation used to introduce a united cheer (cf. hip-hip-hurrah), 1827, earlier hep, cf. Ger. hepp, to animals a cry to attack, to mobs a cry to attack Jews (see hep (2)); perhaps a natural sound (cf. L. eho, heus).