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aculeate (adj.)

c. 1600, figurative, "pointed, stinging," of writing, from Latin aculeatus "having a sting; thorny, prickly," also figurative, from aculeus "a sting, prickle," diminutive of acus "a needle" (from PIE root *ak- "be sharp, rise (out) to a point, pierce"). From 1660s in a literal sense, in zoology, "furnished with a sting;" 1870 in botany.

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Definitions of aculeate from WordNet

aculeate (adj.)
having or resembling a stinger or barb;
aculeate insects such as bees and wasps
Synonyms: aculeated
From wordnet.princeton.edu