| 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 | (adjective) slightly wet | Synonyms: dampish, moist |
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| (noun) a slight wetness | Synonyms: dampness, moistness |
| (verb) lessen in force or effect | Synonyms: break, dampen, soften, weaken |
| (verb) make vague or obscure or make (an image) less visible | Synonyms: dampen, deaden |
| (verb) restrain or discourage | - |
| (verb) deaden (a sound or noise), especially by wrapping | Synonyms: dampen, dull, muffle, mute, tone down |
| firedamp | (noun) a mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air | - |
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