Of or pertaining to a mountain or mountains; growing or living on a mountain; found on or peculiar to mountains; among mountains; as, a mountain torrent; mountain pines; mountain goats; mountain air; mountain howitzer.(adjective)
source: webster1913
noun (n)
a land mass that projects well above its surroundings; higher than a hill(noun.object)
A large mass of earth and rock, rising above the common level of the earth or adjacent land; earth and rock forming an isolated peak or a ridge; an eminence higher than a hill; a mount.(noun)