Definitions from Wiktionary ( )

▸ noun:  (uncountable) The substance constituting Earth's atmosphere: a gaseous mixture of nitrogen, oxygen, and various trace gases.
▸ noun:  The substance of the atmosphere seen as an agency of freshness.
▸ noun:  (historical, philosophy, alchemy) One of the four elements of the ancient Greeks and Romans.
▸ noun:  (historical, medicine) A local environment or atmosphere, in the context of its effects on behavior, health, weather, etc.
▸ noun:  (uncountable, loosely) The substance of the atmosphere on a planet other than Earth.
▸ noun:  (uncountable, usually with the) The apparently open space above the ground which this substance fills, (historical) formerly thought to be limited by the firmament but (meteorology) now considered to be surrounded by the near-vacuum of outer space.
▸ noun:  A breeze; a gentle wind.
▸ noun:  A feeling or sense.
▸ noun:  A sense of poise, graciousness, or quality.
▸ noun:  (usually in the plural) Pretension; snobbishness; pretence that one is better than others.
▸ noun:  (music) A melody or song, especially a solo; an aria.
▸ noun:  (informal) Nothing; absence of anything.
▸ noun:  (countable, uncountable) An air conditioning system.
▸ noun:  (obsolete: chemistry) Any specific gas.
▸ noun:  (uncountable, snowboarding, skateboarding, motor sports) The state of being briefly airborne during a jump.
▸ noun:  A television or radio signal; (by extension) media broadcasts in general.
▸ noun:  (uncountable) Publicity.
▸ verb:  (transitive) To bring (something) into contact with the air, so as to freshen or dry it.
▸ verb:  (transitive) To let fresh air into (a room or a building), to ventilate.
▸ verb:  (transitive) To make public (an opinion, concern, issue, secret, differences, etc); to present to public view (and sometimes discussion).
▸ verb:  (transitive) To broadcast (a television show etc.).
▸ verb:  (intransitive) To be broadcast.
▸ verb:  (transitive, British, MLE, slang) To ignore (a person).
▸ noun:  (rail transport) The station code of Airport in Hong Kong.
▸ verb:  Pronunciation spelling of are.
▸ noun:  Initialism of All India Radio, the national public radio broadcaster of India.
▸ noun:  Initialism of American Institutes for Research, a nonprofit research organization in the United States.

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