| afterdamp | (noun) a toxic mixture of gases (including carbon dioxide and carbon monoxide and nitrogen) after an explosion of firedamp in a mine | - |
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| blackdamp | (noun) the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life | Synonyms: chokedamp |
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| chokedamp | (noun) the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life | Synonyms: blackdamp |
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| damp | (noun) a slight wetness | Synonyms: dampness, moistness |
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| dampener | (noun) a device that dampens or moistens something | Synonyms: moistener |
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| dampening | (noun) the act of making something slightly wet | Synonyms: moistening |
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| damper | (noun) a depressing restraint | - |
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| (noun) a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations | Synonyms: muffler |
| (noun) a movable iron plate that regulates the draft in a stove or chimney or furnace | - |
| dampness | (noun) a slight wetness | Synonyms: damp, moistness |
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| firedamp | (noun) a mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air | - |
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