- 1a very high hill, often with rocks near the top a chain/range of mountains to climb a mountain We spent a week walking in the mountains. to enjoy the mountain air/scenery mountain roads/streams/villages a mountain rescue team There is still snow on the mountain tops.
- 2mountain of something (informal) a very large amount or number of something a mountain of work We made mountains of sandwiches. Idioms
to make an unimportant matter seem important
Check pronunciation: mountain