| • | Any substance in the gaseous, or aeriform, state, the condition of which is ordinarily that of a liquid or solid. |
| • | In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc. |
| • | Wind; flatulence. |
| • | Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting. |
| • | An old name for hypochondria, or melancholy; the blues. |
| • | A medicinal agent designed for administration in the form of inhaled vapor. |
| • | To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate. |
| • | To emit vapor or fumes. |
| • | To talk idly; to boast or vaunt; to brag. |
| • | To send off in vapor, or as if in vapor; as, to vapor away a heated fluid. |
