a plug making an airtight seal to a vent.
- Air pocket
(not in technical use) a nearly vertical air current that can cause an aircraft to experience a sudden change in altitude, usually a decrease. Historical Examples No; if it had been compressible you would not have had that exhibition at the air pocket. The Wonder Island Boys: Exploring the Island Roger Thompson Finlay True enough; […]
- Air police
an organization of personnel in the U.S. Air Force or Air National Guard serving as police. Abbreviation: AP, A.P. Historical Examples Apart from the scenery, there was plenty to interest a Commissioner of Air Police. The Air Pirate Cyril Arthur Edward Ranger Gull I saw myself a hero, vindicated a thousand times in the eyes […]
- Air pollution
air pollution air pollution n. Contamination of air by smoke and harmful gases, mainly oxides of carbon, sulfur, and nitrogen. Contemporary Examples If you can photograph your air pollution – you have a serious problem. When You Can See the Pollution David Frum January 22, 2013 That is a lot of air pollution, noise, and […]
- Air potato
a vine, Dioscorea bulbifera, of southeastern Asia, having tubers weighing several pounds and growing in the leaf axils.