Possible Definitions:
1. Fuel (n.) Any matter used to produce heat by burning; that which feeds fire; combustible matter used for fires, as wood, coal, peat, etc.
2. Fuel (n.) Anything that serves to feed or increase passion or excitement.
3. Fuel (v. t.) To feed with fuel.
4. Fuel (v. t.) To store or furnish with fuel or firing.
