from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A device for augmenting the thrust of a jet engine by burning additional fuel with the uncombined oxygen in the exhaust gases.
- n. A device for burning or chemically altering unburned or partially burned carbon compounds in exhaust gases.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device in the engine of an aircraft which injects fuel into the exhaust system to increase the thrust.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a device injects fuel into a hot exhaust for extra thrust
From after- + burner (Wiktionary)