dactylus

noun3

1. •
   The tip of a cephalopod's tentacle club.

   • The distal end of the club, the dactylus (finger), is pointed and attenuated but is covered with hundreds of small suckers. — 1982
2. •
   The tip of a crustacean's leg.

   • The tip of the dactylus is short and hooked, with a scoop-shaped depression on the anterior surface. — 1975
3. •
   Synonym of dactyl (“type of metrical foot”).