Lewis Short
(adjective) : ăcūlĕātus, a, um, aculeus
* Furnished with stings or prickles, thorny, prickly.
* Lit., of animals and plants: animalia,Plin. 20, 22, 91: bruchus,Vulg. Jer. 51, 27: herbae,Plin. 24, 19, 119: ictus,a puncture made by a sting,Plin. 20, 21, 84, § 223.
* Fig.
* Stinging, pointed, sharp: istaec ... aculeata sunt, animum fodicant,Plaut. Bacch. 1, 1, 30: litterae,Cic. Att. 14, 18, 1.
* Subtle, cunning: contorta et aculeata sophismata,Cic. Ac. 2, 24.
Charlton T. Lewis, Charles Short, A Latin Dictionary