Definition of: mountain

(moun′tən) noun
1. A natural elevation of the earth's surface, rising more or less abruptly to a small summit area, attaining an elevation greater than that of a hill, and standing either in a single mass or forming part of a series.
2. Any large heap or pile resembling this.
3. Something of great magnitude.
—the Mountain. A name given to the ultra–revolutionary party of the French National Assembly or Convention in 1793, from the fact that its members occupied the highest seats in the chamber.
—adjective
1. Of, pertaining to, or living or growing on mountains.
2. Like or suggesting a mountain or mountains. [<OF montaigne <L montanus mountainous <mons, montis mountain]