The Collaborative International Dictionary of English v.0.48:

Euonymus \Eu*on"y*mus\, n. [NL. (cf. L. euonymos). fr. Gr. ?,
   lit., of good name.] (Bot.)
   A genus of small European and American trees; the spindle
   tree. The bark is used as a cathartic.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Euonymus
    n 1: widely distributed chiefly evergreen shrubs or small trees
         or vines [syn: Euonymus, genus Euonymus]