Pronunciation: (dam'pur),[key] —n. 1. a person or thing that damps or depresses: His glum mood put a damper on their party. 2. a movable plate for regulating the draft in a stove, furnace, etc.
3. Music. a. a device in stringed keyboard instruments to deaden the vibration of the strings.
b. the mute of a brass instrument, as a horn.
4. Elect.an attachment to keep the indicator of a measuring instrument from oscillating excessively, as a set of vanes in a fluid or a short-circuited winding in a magnetic field.
5. Mach.a shock absorber.
6. Australian. a. a round, flat cake made of flour and water, and cooked over a campfire.
b. the dough for such cakes.