informal
: to inflate or fill (something) with air
We aired up the tires, gassed up the tanks, and drove on out of Monroe at noon.John Dufresne, Requiem, Mass., 2008

Word History

First Known Use

1940, in the meaning defined above

Time Traveler
The first known use of air up was in 1940

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Cite this Entry

“Air up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/air%20up. Accessed 22 Nov. 2024.

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