Source : Webster's Revised Unabridged Dictionary (1913)

Elm \Elm\, n. [AS. elm; akin to D. olm, OHG. elm, G. ulme, Icel.
   almr, Dan. & Sw. alm, L. ulmus, and E. alder. Cf. {Old}.]
   (Bot.)
   A tree of the genus {Ulmus}, of several species, much used as
   a shade tree, particularly in America. The English elm is
   {Ulmus campestris}; the common American or white elm is {U.
   Americana}; the slippery or red elm, {U. fulva}.

   {Elm beetle} (Zo["o]l.), one of several species of beetles
      (esp. {Galeruca calmariensis}), which feed on the leaves
      of the elm.

   {Elm borer} (Zo["o]l.), one of several species of beetles of
      which the larv[ae] bore into the wood or under the bark of
      the elm (esp. {Saperda tridentata}).

   {Elm butterfly} (Zo["o]l.), one of several species of
      butterflies, which, in the caterpillar state, feed on the
      leaves of the elm (esp. {Vanessa antiopa} and {Grapta
      comma}). See {Comma butterfly}, under {Comma}.

   {Elm moth} (Zo["o]l.), one of numerous species of moths of
      which the larv[ae] destroy the leaves of the elm (esp.
      {Eugonia subsignaria}, called elm spanworm).

   {Elm sawfly} (Zo["o]l.), a large sawfly ({Cimbex Americana}).
      The larva, which is white with a black dorsal stripe,
      feeds on the leaves of the elm.