セイウチ Also written 海象, せいうち, かいぞう, 海馬 Meanings Noun walrus (Odobenus rosmarus) elephant seal (Mirounga spp.) See also: ゾウアザラシ. Words containing セイウチ セイウチ科 (セイウチか) Odobenidae (family containing the walrus) Jinuma: Japanese Dictionary · Word lists