noun
plural fuels
[count, noncount] :a material (such as coal, oil, or gas) that is burned to produce heat or power
[noncount] :something that gives support or strength to something (such as argument or angry feelings)
verb
fuels; US fueled or Brit fuelled; US fueling or Brit fuelling
[+ obj] :to supply (something) with fuel
[no obj] :to take in fuel
[+ obj] to give support or strength to (something)
to provide the necessary conditions for (something)
fuel up
[phrasal verb]
to put fuel into a car, airplane, etc.