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1·A weasellike, usually albino mammal(Mustela putorius furo)related to the polecat and often trained to hunt rats or rabbits.

白鼬，雪貂一种象鼬的通常为白化体的与艾鼬有关的哺乳动物（鼬属雪貂），经常被驯养来猎取鼠和野兔。

2·A weasel (Mustela ermine a) of northern regions, having a black - tipped tail and dark brown fur that in winter changes to white.

白鼬北部地区的一种鼬(白鼬鼬属)，尾部为黑色，深棕色皮毛在冬天变白。