Definition of fur seal
: any of various eared seals that have a double coat with a dense soft underfur and were hunted especially formerly for their desirable pelts:a : a large seal (Callorhinus ursinus) of the northern Pacific Ocean having its main breeding rookery on Pribilof Island in the Bering Sea —called also northern fur sealb : any of a genus (Arctocephalus) of seals chiefly of the southern hemisphere —called also southern fur seal
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