Meaning

noun a substance that can be consumed to produce energy

verb provide with a combustible substance that provides energy

verb provide with fuel

originFrom Middle English fuayle, from Old French fouaille, feuaille (“firewood, kindling”), from feu (“fire”), from Late Latin focus (“fire”), from Latin focus (“hearth”), whence English focus. Cognate with Spanish fuego (“fire”), and Portuguese fogo (“fire”).

Etymology from Wiktionary, CC BY-SA 3.0