the fluid which we breathe, and which surrounds the earth; the atmosphere. it is invisible, inodorous, insipid, transparent, compressible, elastic, and ponderable.-symbolically: something unsubstantial, light, or volatile.-a particular state of the atmosphere, as respects heat, cold, moisture, etc., or as affecting the sensations; as, a smoky air, a damp air, the morning air, etc.-any aeriform body; a gas; as, oxygen was formerly called vital air.-air in motion; a light breeze; a gentle wind.-odoriferous or contaminated air.-that which surrounds and influences.-utterance abroad; publicity; vent.-intelligence; information.-a musical idea, or motive, rhythmically developed in consecutive single tones, so as to form a symmetrical and balanced whole, which may be sung by a single voice to the stanzas of a hymn or song, or even to plain prose, or played upon an instrument; a melody; a tune; an aria.-in harmonized chorals, psalmody, part songs, etc., the part which bears the tune or melody -- in modern harmony usually the upper part -- is sometimes called the air.-the peculiar look, appearance, and bearing of a person; mien; demeanor; as, the air of a youth; a heavy air; a lofty air.-peculiar appearance; apparent character; semblance; manner; style.-an artificial or affected manner; show of pride or vanity; haughtiness; as, it is said of a person, he puts on airs.-the representation or reproduction of the effect of the atmospheric medium through which every object in nature is viewed.-carriage; attitude; action; movement; as, the head of that portrait has a good air.-the artificial motion or carriage of a horse.-to expose to the air for the purpose of cooling, refreshing, or purifying; to ventilate; as, to air a room.-to expose for the sake of public notice; to display ostentatiously; as, to air one's opinion.-to expose to heat, for the purpose of expelling dampness, or of warming; as, to air linen; to air liquors.