資料來源 : Webster's Revised Unabridged Dictionary (1913)

Asclepias \As*cle"pi*as\, n. [L., fr. Gr. ?, named from
   Asclepios or Aesculapius.] (Bot.)
   A genus of plants including the milkweed, swallowwort, and
   some other species having medicinal properties.

   {Asclepias butterfly} (Zo["o]l.), a large, handsome, red and
      black butterfly ({Danais Archippus}), found in both
      hemispheres. It feeds on plants of the genus Asclepias.

Butterfly \But"ter*fly`\, n.; pl. {Butterflies}. [Perh. from the
   color of a yellow species. AS. buter-fl[=e]ge,
   buttor-fle['o]ge; cf. G. butterfliege, D. botervlieg. See
   {Butter}, and {Fly}.] (Zo["o]l.)
   A general name for the numerous species of diurnal
   Lepidoptera.

   Note: [See Illust. under {Aphrodite}.]

   {Asclepias butterfly}. See under {Asclepias}.

   {Butterfly fish} (Zo["o]l.), the ocellated blenny ({Blennius
      ocellaris}) of Europe. See {Blenny}. The term is also
      applied to the flying gurnard.

   {Butterfly shell} (Zo["o]l.), a shell of the genus {Voluta}.
      

   {Butterfly valve} (Mech.), a kind of double clack valve,
      consisting of two semicircular clappers or wings hinged to
      a cross rib in the pump bucket. When open it somewhat
      resembles a butterfly in shape.