Source : Webster's Revised Unabridged Dictionary (1913)

Drupaceous \Dru*pa"ceous\, a. [Cf. F. drupac['e].] (Bot.)
   Producing, or pertaining to, drupes; having the form of
   drupes; as, drupaceous trees or fruits.

Source : WordNet®

drupaceous
     adj : of or related to a drupe