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]

	

	tentacle
     n 1: something that acts like a tentacle in its ability to grasp;
          "caught in the tentacles of organized crime"
     2: any of various elongated tactile or prehensile flexible
        organs that occur on the head or near the mouth in many
        animals used for feeling or grasping or locomotion

	

	tentacle n. A covert pseudo, sense 1. An artificial identity created
   in cyberspace for nefarious and deceptive purposes. The implication is
   that a single person may have multiple tentacles. This term was
   originally floated in some paranoid ravings on the cypherpunks list (see
   cypherpunk), and adopted in a spirit of irony by other, saner members.
   It has since shown up, used seriously, in the documentation for some
   remailer software, and is now (1994) widely recognized on the net.