catamountain

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various wild felines, such as the leopard or a wildcat.

Century Dictionary and Cyclopedia

1. n. Same as catamount.
2. Like a wildcat; ferocious; wildly savage: as, “cat-a-mountain looks,”

GNU Webster's 1913

1. n. the bushy-tailed European wildcat (Felis silvestris) resembling the domestic tabby and regarded as the ancestor of the domestic cat.

WordNet 3.0

1. n. bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat