n. 1 a long slender flexible appendage of an (esp. invertebrate) animal, used for feeling, grasping, or moving. 2 a thing used like a tentacle as a feeler etc. 3 Bot. a sensitive hair or filament. tentacled adj. (also in comb.). tentacular adj. tentaculate adj.
[ mod.L tentaculum f. L tentare = temptare (see TEMPT) + -culum -CULE ]