Vapor

Term used to describe moisture laden air.

Merriam-Webster Online Dictionary
vapor (noun)
1.
diffused matter (as smoke or fog) suspended floating in the air and impairing its transparency
2.
a) a substance in the gaseous state as distinguished from the liquid or solid state
b) a substance (as gasoline, alcohol, mercury, or benzoin) for industrial, therapeutic, or military uses - vaporized , also a mixture (as the explosive mixture in an internal combustion engine) of such a vapor with air
3.
a) something unsubstantial or transitory - phantasm
b) a foolish or fanciful idea
4.
a) archaic exhalations of bodily organs (as the stomach) held to affect the physical or mental condition
b) a depressed or hysterical nervous condition
vapor (verb)
intransitive verb
1.
a) to rise or pass off in vapor
b) to emit vapor
2.
to indulge in bragging, blustering, or idle talk