wal·rus 
(wôlrəs, wŏl-)
(wôlrəs, wŏl-)n. pl. walrus or wal·rus·es
A large marine mammal (Odobenus rosmarus) of Arctic regions, related to the seals and having two long tusks, tough wrinkled skin, and four flippers.
[Dutch, of Scandinavian origin.]
walrusOdobenus rosmarus