Rocky Mountain goat

noun
  1. a long-haired, white, antelopelike wild goat, Oreamnos americanus, of mountainous regions of western North America, having short, black horns.

Origin of Rocky Mountain goat

An Americanism dating back to 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for rocky mountain goat

Rocky Mountain goat

noun
  1. a sure-footed goat antelope, Oreamnos americanus, inhabiting the Rocky Mountains. It has thick white hair and black backward-curving horns
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