Definitions

1. noun

a visible mass of water or other liquid, suspended in the air as a mist or cloud.

“The misty vapour rose from the valley below.”

2. noun

a small amount of a substance, especially a liquid or gas, released or given off.

“The factory released a vapour of toxic chemicals into the atmosphere.”

3. verb

to change from a liquid to a gas, especially quickly.

“Water vapour rises from the surface of the hot coffee.”

4. noun

a mixture of gases, especially one that is visible as a cloud or mist.

“The vapour in the room made it difficult to see.”

5. noun

a feeling of unease or anxiety, especially one that is vague or hard to describe.

“She felt a vapour of uncertainty as she decided what to do next.”