Source : Webster's Revised Unabridged Dictionary (1913)

Fuel \Fu"el\, v. t.
   1. To feed with fuel. [Obs.]

            Never, alas I the dreadful name, That fuels the
            infernal flame.                       --Cowley.

   2. To store or furnish with fuel or firing. [Obs.]

            Well watered and well fueled.         --Sir H.
                                                  Wotton.

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.

Source : WordNet®

fuel
     n : a substance that can be consumed to produce energy; "more
         fuel is needed during the winter months"; "they developed
         alternative fuels for aircraft"
     [also: {fuelling}, {fuelled}]

fuel
     v 1: provide with a combustible substance that provides emergy;
          "fuel aircraft, ships, and cars"
     2: provide with fuel; "Oil fires the furnace" [syn: {fire}]
     3: take in fuel, as of a ship; "The tanker fueled in Bahrain"
     4: stimulate; "fuel the debate on creationism"
     [also: {fuelling}, {fuelled}]