Main Entry: ¹fu·el

Pronunciation: \ˈfyü(-ə)l\

Function: noun

Usage: often attributive

Etymology: Middle English fewel, from Anglo-French fuail, feuaile, from Vulgar Latin *focalia, from Latin focus hearth

Date: 13th century

1 a : a material used to produce heat or power by burning b : nutritive material c : a material from which atomic energy can be liberated especially in a reactor
2 : a source of sustenance or incentive : reinforcement