gasoline for use in piston-engined aircraft.
Origin of avgas
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for avgas
Historical Examples of avgas
Loaded an ore boat with avgas and ammo and ran it up the Seaway.
Food was brought to them from time to time, but it tasted like avgas.