Definitions
1.nounAny of various asteroids or other echinoderms (not in fact fish) with usually five arms, many of which eat bivalves or corals by everting their stomach.
2.nounAny many-armed or tentacled sea invertebrate, whether cnidarian, echinoderm, or cephalopod.
3.nounA woman who reluctantly takes part in sexual intercourse, and lays on her back while spreading her limbs.
4.noun(usually in translations of Japanese pornography) The anus.