Noah Webster
Aculeate
ACU'LEATE, adjective [Latin aculeus, from acus, Gr. a point, and the diminutive. See Acid.]
1. In botany, having prickles, or sharp points; pointed; used chiefly to denote prickles fixed in the bark, in distinction from thorns, which grow from the wood.
2. In zoology, having a sting.