vapor

Cloudy diffused matter such as mist, steam or fumes suspended in the air.

The desert storm was riding in its strength; the travellers lay beneath the mastery of the fell simoom.[…]Drifts of yellow vapour, fiery, parching, stinging, filled the air.

The gaseous state of a substance that is normally a solid or liquid.

Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.

Something insubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.

For what is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away.

I am at this present very sick of my little vapour of fame.

Any medicinal agent designed for administration in the form of inhaled vapour.

Sulphurous fumes have also been recommended, as well as diffusing a variety of vapors in the apartment of the patient; on their beneficial or injurious effects we are unable to speak.

Hence the vapor, so useful in expanding the compressed tissues and enabling the air to permeate and expand the contracted parenchyma in consumption, causes a sensation of great fatigue in asthma.

Hypochondria; melancholy; the blues; hysteria, or other nervous disorder.

Jan 13, 1732, John Arbuthnot, letter to Jonathan Swift He talks me into a fit of vapours twice or thrice a week.

She made several gulps and controlled her breath. She released her grip on Podson and stared at him without recognition. Podson went on patting her reassuringly, relieved from administering first aid to an attack of the vapours.

To become vapor; to be emitted or circulated as vapor.

To turn into vapor.

to vapor away a heated fluid

He'd […]laugh to see one throw his heart away, / Another, sighing, vapour forth his soul.

To emit vapor or fumes.

Running waters vapour not so much as standing waters.

To use insubstantial language; to boast or bluster.

He vapoured, and fretted, and fumed, and trotted up and down, and tried to make himself pleasing in Miss Hollis's big, quiet, grey eyes, and failed.

then the Major gave us a graphic account of a struggle he had with a wounded bear. I privately wished that the bears would win sometimes on these occasions; at least they wouldn't go vapouring about it afterwards.

To give (someone) the vapors; to depress, to bore.

“I only mean,” cried she, giddily, “that he might have some place a little more pleasant to live in, for really that old moat and draw-bridge are enough to vapour him to death […].”