The DICT Development Group

  Yucca \Yuc"ca\, n. [NL., from Yuca, its name in St. Domingo.]
     (Bot.)
     A genus of American liliaceous, sometimes arborescent, plants
     having long, pointed, and often rigid, leaves at the top of a
     more or less woody stem, and bearing a large panicle of showy
     white blossoms.
     [1913 Webster]
  
     Note: The species with more rigid leaves (as Yucca
           aloifolia, Yucca Treculiana, and Yucca baccata)
           are called Spanish bayonet, and one with softer
           leaves ({Yucca filamentosa) is called bear grass,
           and Adam's needle.
           [1913 Webster]
  
     Yucca moth (Zool.), a small silvery moth ({Pronuba
        yuccasella) whose larvae feed on plants of the genus
        Yucca.
        [1913 Webster]