adjective
Definition: Relating to a class of marine animals that includes octopuses, squids, and cuttlefish, known for their intelligence and ability to change color.
Example: The cephalopod species are known for their complex behaviors and advanced nervous systems.
noun
Definition: A type of marine animal that includes squids, octopuses, and cuttlefish, known for their large heads, tentacles, and ability to squirt ink for protection.
Example: The octopus is a fascinating cephalopod that can change its color to blend in with its surroundings.