Source : Webster's Revised Unabridged Dictionary (1913)

Markhoor \Mark"hoor`\, n. [Per. m[=a]r-kh?r snake eater.]
   (Zo["o]l.)
   A large wild goat ({Capra megaceros}), having huge flattened
   spiral horns. It inhabits the mountains of Northern India and
   Cashmere.