Definition of vapour

  1. vapour Noun The gas phase component of a liquid or solid.
  2. vapour Noun The gaseous state of a substance that is normally a solid or liquid.
  3. vapour Verb To become vapour; to be emitted or circulated as vapour.
  4. vapour Verb To turn into vapour.
  5. vapour Verb To use insubstantial language; to boast or bluster.
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