- particles of moisture or other substance suspended in air and visible as clouds, smoke, etc
- a gaseous substance at a temperature below its critical temperature
- a substance that is in a gaseous state at a temperature below its boiling point
- something fanciful that lacks substance or permanence
- a depressed mental condition believed originally to be the result of vaporous exhalations from the stomach
- to evaporate or cause to evaporate; vaporize
- to make vain empty boasts; brag
