Source : Webster's Revised Unabridged Dictionary (1913)

Aculeated \A*cu"le*a`ted\, a.
   Having a sharp point; armed with prickles; prickly; aculeate.

Source : WordNet®

aculeated
     adj : having or resembling a stinger or barb; "aculeate insects
           such as bees and wasps" [syn: {aculeate}]