Hardy and fast-growing tree (Acer negundo), also called ash-leaved maple, of the maple family, native to the central and E U.S. Its compound leaves (rare among maples) consist of three, five, or seven coarsely toothed leaflets. The single seed is borne in a samara (dry, winged fruit). Because of its rapid growth and its drought resistance, it was widely planted for shade by early settlers in the prairie regions of the U.S. Maple syrup and sugar are sometimes obtained from the box elder. Its wood is used for crates, furniture, paper pulp, and charcoal.
Elder El"der, n. [OE. ellern, eller, AS. ellen, cf. LG. elloorn; perh. akin to OHG. holantar, holuntar, G. holunder; or perh. to E. alder, n.] (Bot.) A genus of shrubs (Sambucus) having broad umbels of white flowers, and small black or red berries. Note: The common North American species is Sambucus Canadensis; the common European species (S. nigra) forms a small tree. The red-berried elder is S. pubens. The berries are diaphoretic and aperient. Box elder. See under 1st Box. Dwarf elder. See Danewort. Elder tree. (Bot.) Same as Elder. --Shak. Marsh elder, the cranberry tree Viburnum Opulus).
Box Box (b[o^]ks), n. [As. box, L. buxus, fr. Gr. ?. See Box a case.] (Bot.) A tree or shrub, flourishing in different parts of the world. The common box (Buxus sempervirens) has two varieties, one of which, the dwarf box (B. suffruticosa), is much used for borders in gardens. The wood of the tree varieties, being very hard and smooth, is extensively used in the arts, as by turners, engravers, mathematical instrument makers, etc. Box elder, the ash-leaved maple (Negundo aceroides), of North America. Box holly, the butcher's broom (Russus aculeatus). Box thorn, a shrub (Lycium barbarum). Box tree, the tree variety of the common box.