A proper noun "mountain" represents various locations including a village in north dakota, a town in wisconsin, townships in the united states, a rural municipality in manitoba, canada, and a hamlet in west yorkshire, england.

(historical, with "the") The Montagnard party in the time of the French Revolution.

(rail transport) a steam locomotive of the 4-8-2 wheel arrangement.  4-8-2 on Wikipedia

(countable) An elevation of land of considerable dimensions rising more or less abruptly, forming a conspicuous figure in the landscape, usually having a small extent of surface at its summit.

(countable) Something very large in size or quantity; a huge amount; a great heap.

(figurative) A difficult task or challenge.

(uncountable, now historical) Wine from Malaga made from grapes that grow on a mountain.

(countable, slang) A woman's large breast.

(cartomancy) The twenty-first Lenormand card.