'Tentacle sheath' definitions:

Definition of 'Tentacle sheath'

From: GCIDE
  • Tentacle \Ten"ta*cle\, n. [NL. tentaculum, from L. tentare to handle, feel: cf. F. tentacule. See Tempt.] (Zool.) 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. [1913 Webster]
  • Tentacle sheath (Zool.), a sheathlike structure around the base of the tentacles of many mollusks. [1913 Webster]