diesel

Concise Oxford English Dictionary © 2008 Oxford University Press:
diesel /ˈdiːz(ə)l/

▶noun

• 1 an internal-combustion engine in which heat produced by the compression of air in the cylinder is used to ignite the fuel.

• 2 (also diesel oil) a heavy petroleum fraction used as fuel in diesel engines.

– derivatives
dieselize (or dieselise) verb.

– origin C19: named after the German engineer Rudolf Diesel.