noun a mountainlike mass; something of great bulk.
2. mountain ·adj like a mountain; mountainous; vast; very great.
3. mountain ·noun a range, chain, or group of such elevations; as, the white mountains.
4. mountain ·noun 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.
5. mountain ·adj 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.