blacktail Meaning, Definition & Usage

  1. noun mule deer of western Rocky Mountains
    Odocoileus hemionus columbianus; blacktail deer; black-tailed deer.

WordNet

Black"tail` noun
Etymology
Black + tail.
Definitions
  1. (Zoöl.) A fish; the ruff or pope.
  2. (Zoöl.) The black-tailed deer (Cervus or Cariacus Columbianus) of California and Oregon; also, the mule deer of the Rocky Mountains. See Mule deer.

Webster 1913