Source : Webster's Revised Unabridged Dictionary (1913)

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.

Buxine \Bux"ine\, n. (Chem.)
   An alkaloid obtained from the {Buxus sempervirens}, or common
   box tree. It is identical with {bebeerine}; -- called also
   {buxina}.

Source : WordNet®

Buxus sempervirens
     n : large slow-growing evergreen shrub or small tree with
         multiple stems; extensively used for hedges or borders
         and topiary figures [syn: {common box}, {European box}]