gray lemming(n = noun.animal) grey lemming, red-backed lemming - Old World lemming;
is a kind of lemming
is a member of genus myopus, myopus

african gray, american gray birch, asa gray, ash gray, brown lemming, charcoal gray, dapple gray, davy's gray, dwarf gray willow, eastern gray squirrel, european lemming, gray, gray alder, gray area, gray birch, gray catbird, gray eminence, gray flounder, gray fox, gray goldenrod, gray hen, gray jay, gray kingbird, gray market, gray matter, gray mullet, gray partridge, gray polypody, gray poplar, gray sage, gray sea eagle, gray skate, gray snapper, gray sole, gray substance, gray whale, gray willow, gray wolf, great gray owl, grey lemming, hudson bay collared lemming, lemming, northern bog lemming, oxford gray, payne's gray, pearl gray, pied lemming, red-backed lemming, robert gray, silver gray, southern bog lemming, steel gray, tattletale gray, thomas gray, western gray squirrel