The Collaborative International Dictionary
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 ( Buxus 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.
Wiktionary
n. 1 Any of several trees, of the genus ''Buxus'', often used as a hedge and as a source of boxwood 2 Any trees of diverse species in a few families, native to Australia.
Usage examples of "box tree".
Sand-box tree (Hura crepitans}: whole tree contains an active emetocathartic, used as a fish-poison in Brazil.
The box, pipe tree: the box tree was used for making pipes or horns.