flatten

1. a. To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. Source: opted

2. a. To throw down; to bring to the ground; to prostrate; hence, to depress; to deject; to dispirit. Source: opted

3. a. To make vapid or insipid; to render stale. Source: opted

4. a. To lower the pitch of; to cause to sound less sharp; to let fall from the pitch. Source: opted

5. v. i. To become or grow flat, even, depressed dull, vapid, spiritless, or depressed below pitch. Source: opted

6. v. make flat or flatter Source: wordnet

7. v. become flat or flatter Source: wordnet

8. v. lower the pitch of (musical notes) Source: wordnet

9. 1. To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. 2. To throw down; to bring to the ground; to prostrate; hence, to depress; to deject; to dispirit. 3. To make vapid or insipid; to render stale. 4. (Mus.) To lower the pitch of; to cause to sound less sharp; to let fall from the pitch. To flatten a sail (Naut.), to set it more nearly fore-and-aft of the vessel. -- Flattening oven, in glass making, a heated chamber in which split glass cylinders are flattened for window glass. To become or grow flat, even, depressed dull, vapid, spiritless, or depressed below pitch. Source: webster

10. To lower the pitch of; to cause to sound less sharp; to letfall from the pitch. To flatten a sail (Naut.), to set it more nearlyfore-and-aft of the vessel.-- Flattening oven, in glass making, a heated chamber in which splitglass cylinders are flattened for window glass. Source: adambom

11. v:100 v. make flat or flatter v. become flat or flatter v. lower the pitch of (musical notes) Source: ecdict

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