Widely distributed fast-moving ten-armed cephalopod mollusk having a long tapered body with triangular tail fins WordNet 3.0 & Open English WordNet

A squid is a mollusc with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting these criteria. Wikipedia

Type of marine cephalopod with ten limbs. Wikipedia Disambiguation

Order of mollusks Wikidata

Any of several carnivorous marine cephalopod mollusks, of the order Teuthida, having a mantle, eight arms, and a pair of tentacles. Wiktionary