Definition of damper

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< dampen

damping >

damp·er

r) KEY

NOUN:

One that deadens, restrains, or depresses: Rain put a damper on our picnic plans.
An adjustable plate, as in the flue of a furnace or stove, for controlling the draft.
Music
1. A device in various keyboard instruments for deadening the vibrations of the strings.
2. A mute for various brass instruments.
A device that eliminates or progressively diminishes vibrations or oscillations, as of a magnetic needle.

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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
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