Read the dictionary definition of mountain. All definitions for this word.
1. a land mass that projects well above its surroundings; higher than a hill
2. (often followed by `of') a large number or amount or extent
1. a batch of letters
2. a deal of trouble
3. a lot of money
4. he made a mint on the stock market
5. see the rest of the winners in our huge passel of photos
6. it must have cost plenty
7. a slew of journalists
8. a wad of money
