luscaEtymologyClipping of Mollusca, a phylum containing octopus, squid, cuttlefish, and other cephalopods.lusca means A folkloric sea monster of the Caribbean resembling a giant octopus/squid, or giant cuttlefish; or shark-headed cephalopod-tentacle armed creature (sharktopus). Lexicurio rates it Sui generis — a strength score of 90 out of 100.nounA folkloric sea monster of the Caribbean resembling a giant octopus/squid, or giant cuttlefish; or shark-headed cephalopod-tentacle armed creature (sharktopus).“The lusca, he said, was a terrible creature, like a monstrous octopus or cuttlefish.”