a common American deer (Odocoileus virginianus) having a tail that is white on the undersurface, a white-spotted red coat in summer, and a diffuse brownish-gray coat in winter
See white-tailed deer in American Heritage Dictionary 4
noun
A common North American deer (Odocoileus virginianus) having a grayish coat that turns reddish-brown in summer and a tail that is white on the underside. Also called Virginia deer, whitetail.