資料來源 : Webster's Revised Unabridged Dictionary (1913)

Fuel \Fu"el\, n. [OF. fouail, fuail, or fouaille, fuaille, LL.
   focalium, focale, fr. L. focus hearth, fireplace, in LL.,
   fire. See {Focus}.] [Formerly written also {fewel.}]
   1. Any matter used to produce heat by burning; that which
      feeds fire; combustible matter used for fires, as wood,
      coal, peat, etc.

   2. Anything that serves to feed or increase passion or
      excitement.

   {Artificial fuel}, fuel consisting of small particles, as
      coal dust, sawdust, etc., consolidated into lumps or
      blocks.