Puu or Pu'u is a Hawaiian word for any protuberance, from a pimple to a hill, and can refer to: Puu Kukui, mountain peak in Hawaii Pu'u Huluhulu (Hawaii Route 200) Puʻu ʻŌʻō (Puu Oo), volcanic cone in Hawaii Setsuna Meioh (Sailor Pluto), Sailor Moon character Puu (YuYu Hakusho), a major secondary character from Yu Yu Hakusho