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.
- Any of various deciduous trees of the genus Ulmus, characteristically having arching or curving branches and serrate leaves with asymmetrical bases. Elms are widely planted as shade trees.
- The wood of one of these trees.