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Definition of: fuel
(fy
′əl) noun
1. Combustible matter, as wood or coal, used to feed a fire.
2. Whatever feeds or sustains any expenditure, outlay, passion, or excitement.
—v.t. & v.i. fu·eled or fu·elled, fu·el·ing or fu·el·ling To supply with or take in fuel. [<OF fouaille <LL focalia <focus hearth]
—fu′el·er, fu′el·ler noun
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