FLATTEN
Flat"ten, v. t. [imp. & p. p. Flattened; p. pr. & vb. n. Flattening.]
Etym: [From Flat, a.]
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.)
Defn: 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.
FLATTEN
Flat"ten, v. i.
Defn: To become or grow flat, even, depressed dull, vapid, spiritless, or depressed below pitch.
FLATTER
Flat"ter, n.
1. One who, or that which, makes flat or flattens.