\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.