Home › Words › P › pinnipedpinnipedpinniped · adj — pertaining to or similar to such a mammal.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom Latin pinna (“fin”) + pes (“foot”).adjPertaining to or similar to such a mammal.nounA marine mammal belonging to the parvorder Pinnipedia, comprising walruses, eared seals and earless seals, characterized by four limbs modified into flippers.Definitions & examples from Wiktionary (CC BY-SA 3.0).