cactus — Lewis & Short
cactus, i, m., = ka/ktos,
I a prickly plant with edible stalks, etc., found in Sicily, Spanish artichoke: Cynara cardunculus, Linn.; Plin. 21, 16, 57, § 97.—
II Trop., any thing thorny, unpleasant:
eradicato omni cacto et rubo subdolae familiaritatis,Tert. Pall. 2 fin.