vapor
noun
1. a visible suspension in the air of particles of some substance
Similar word(s): vapour
Definition categories: substance, suspension
2. the process of becoming a vapor
Similar word(s): evaporation, vaporisation, vaporization, vapour
Definition categories: process
verb
1. (intransitive) To become vapor; to be emitted or circulated as vapor.
2. (transitive) To turn into vapor.
3. (intransitive) To use insubstantial language; to boast or bluster.