D defs.my
Entry 1 sense Webster, 1913

Tentacle

/tĕn'-tək-əl/ · Ten·ta·cle · IPA /ˈtɛntəkəl/
01 n. A more or less elongated process or organ, simple or branched, proceeding from the head or cephalic region of invertebrate animals, being e…
  1. 1.
    A more or less elongated process or organ, simple or branched, proceeding from the head or cephalic region of invertebrate animals, being either an organ of sense, prehension, or motion.(Zool.)
Phrases & compounds
Tentacle sheath — a sheathlike structure around the base of the tentacles of many mollusks.