a.

1. 有湿气的；潮湿的
   It's damp and cold. I think it's going to rain.

   天气又湿又冷。我看要下雨。

2. 消沉的，沮丧的

n.[U]

1. 湿气，潮湿
   There's still damp in these clothes.

   这些衣服还有点潮。

2. （矿井）瓦斯；有毒气体
3. 【古】消沉，沮丧

vt.

1. 使潮湿
   Damp the cloth before you clean the windows.

   在擦玻璃窗之前，把揩布弄湿。

2. 使沮丧；抑制；降低
   The setback did not damp his zest.

   挫折没有使他降低热情。

3. 封（火），灭（火）
4. 【音】制止（琴弦）的音
5. 【物】使阻尼；使减幅

vi.

1. 变潮湿
2. 【物】阻尼，减幅

adj.

n.

1. moisture in the air, on a surface, or in a solid, typically with detrimental or unpleasant effects.
   ▸ (damps) archaic damp air or atmosphere.
2. archaic a check or discouragement.

v.

1. make damp.
2. (often damp something down) make (a fire) burn less strongly by reducing its air supply.
   ▸control or restrain (a feeling or a situation).
3. reduce or stop the vibration of (the strings of a musical instrument).
   ▸Physics  progressively reduce the amplitude of (an oscillation or vibration).