diesel
noun uk/ˈdiː.zəl/ us/ˈdiː.zəl/
C1 [ U ]柴油
a type of heavy oil used as fuel
a diesel engine 柴油发动机
My new car runs on (= uses) diesel. 我的新汽车用柴油。
[ C ]（尤指火车的）内燃机；柴油车
any vehicle, especially a train, that has a diesel engine