[エイチピー;エッチピー, eichipi-; ecchipi-](n) (1) (See 馬力) horsepower; HP; (2) (HP only) (See ホームページ) home page; (3) (HP only) (See ハーフパイプ) half-pipe (i.e. in snowboarding); (4) (HP only) HP (i.e. a 'hit point' in a role-playing game); (5) (hp only) (See ハープ) harp[Add to Longdo]