To make flat; to reduce to an equal or even surface; to level.

To beat down to the ground; to lay flat.

To make vapid or insipid; to render stale.

To depress; to deject, as the spirits; to dispirit.

In music, to reduce, as sound; to render less acute or sharp.

flat’n.

To grow or become even on the surface.

To become dead, stale, vapid or tasteless.

To become dull or spiritless.