The Collaborative International Dictionary
Tentacula
Tentaculum \Ten*tac"u*lum\, n.; pl. Tentacula. [NL. See Tentacle.]
(Zo["o]l.) A tentacle.
(Anat.) One of the stiff hairs situated about the mouth, or on the face, of many animals, and supposed to be tactile organs; a tactile hair.
Wiktionary
tentacula
n. (plural of tentaculum English)