I . n.
1.
Gaseous state ( of a substance ordinarily fluid or solid ), aeriform state.
2.
Fume, steam, reek, exhalation, smoke, fog, mist, rack.
3.
Phantom, fantasy, whim, whimsey, vagary, day-dream, vain imagination, unreal fancy, dream, vision.
II . v. n.
Boast, brag, bluster, swagger, bully, faire claquer son fouet .