Etymology
Advertisement
air-freshener (n.)
1945, from air (n.1) + agent noun from freshen.
Related entries & more 
Advertisement
air-raid (n.)

1914, from air (n.1) meaning "by aircraft" + raid (n.); originally in reference to British attacks Sept. 22, 1914, on Zeppelin bases at Cologne and Düsseldorf in World War I. The German word is Fliegerangriff "aviator-attack," and if Old English had survived into the 20th century our word instead might be fleogendeongrype.

One didn't dare to inhale for fear of breathing it in. It was the sound of eighteen hundred airplanes approaching Hamburg from the south at an unimaginable height. We had already experienced two hundred or even more air raids, among them some very heavy ones, but this was something completely new. And yet there was an immediate recognition: this was what everyone had been waiting for, what had hung for months like a shadow over everything we did, making us weary. It was the end. [Hans Erich Nossack, "Der Untergang," 1942]
Related entries & more 
plein-air (adj.)
1894, from French phrase en plein air, literally "in the open air." The style developed among French impressionists c. 1870.
Related entries & more 
air mail (n.)

also air-mail, airmail, 1913, from air (n.1) meaning "by aircraft" + mail (n.1). As a verb by 1919. Related: Air-mailed.

Related entries & more 
air-bag (n.)

"sealed bag filled with air," 1836, from air (n.1) + bag (n.). In early use a means of raising sunken ships, etc.; as an automobile safety feature by 1970.

Related entries & more 
Advertisement
air-brake (n.)
brake that works by compressed air power, 1872, from air (n.1) + brake (n.1). Related: Air-brakes.
Related entries & more 
air-shaft (n.)
long narrow passage for admitting air, 1690s, from air (n.1) + shaft (n.2).
Related entries & more 
air-brush (n.)
also airbrush, "atomizer used for spraying liquid ink or paint," 1883, from air (n.1) + brush (n.1). Invented a few years earlier but called at first paint distributer; renamed by U.S. manufacturer Liberty Walkup, who improved the design. As a verb by 1902. Related: Airbrushed; airbrushing.
Related entries & more 
air-gun (n.)
1753, "gun in which condensed air propels the ball or bullet," 1753, from air (n.1) + gun (n.).
Related entries & more 
air-port (n.2)
"small opening in the side of a ship to admit air and light," 1788, from air (n.1) + port (n.2).
Related entries & more 

Page 5