black-tailed deer

[ blak-teyld ]
/ ˈblækˌteɪld /
|

noun

a variety of mule deer, Odocoileus hemionus columbianus, of the western slope of the Rocky Mountains, having a tail that is black above.
Also blacktail deer [blak-teyl] /ˈblækˌteɪl/.

Origin of black-tailed deer

An Americanism dating back to 1800–10
Also called black·tail.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for blacktail

blacktail

/ (ˈblækˌteɪl) /

noun

a variety of mule deer having a black tail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012