- cephalopod⇄adj. of or belonging to the cephalopods.
- cephalopod⇄cephalopod, noun, adjective.
- cephalopod⇄noun any one of the most highly organized class of marine mollusks, characterized by long, armlike tentacles around the mouth, a large head, a pair of large eyes, a sharp, birdlike beak, and a siphon used in propulsion. Many can expel a dark, inklike fl