|
English to English verb
| 1 |
make flat or flatter |  | Example: flatten a road
flatten your stomach with these exercises
source: wordnet30
| 2 |
become flat or flatter | | Example: The landscape flattened
source: wordnet30
| 3 |
lower the pitch of (musical notes) | | source: wordnet30
| 4 |
To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. | | source: webster1913
| 5 |
To become or grow flat, even, depressed, dull, vapid, spiritless, or depressed below pitch. | | source: webster1913
|