catamountain

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various wild felines, such as the leopard or a wildcat.

from The Century Dictionary.

• noun Same as catamount.
• Like a wildcat; ferocious; wildly savage: as, “cat-a-mountain looks,”

from the GNU version of the Collaborative International Dictionary of English.

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

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat