from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Fine particulate ash sent up by the combustion of a solid fuel, such as coal, and discharged as an airborne emission or recovered as a byproduct for various commercial uses.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun fine solid particles of ash that are carried into the air when fuel is combusted
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