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English to English noun
| 1 |
a movable iron plate that regulates the draft in a stove or chimney or furnace |  | source: wordnet30
| 2 |
a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations | | source: wordnet30
| 3 |
a depressing restraint | | Example: rain put a damper on our picnic plans
source: wordnet30
| 4 |
That which damps or checks; as: (a) A valve or movable plate in the flue or other part of a stove, furnace, etc., used to check or regulate the draught of air. (b) A contrivance, as in a pianoforte, to deaden vibrations; or, as in other pieces of mechanism, to check some action at a particular time. | | source: webster1913
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