proper noun

1. (given name, male), variant spelling of Derek.

noun (uncountable, countable, plural: diesels)

1. a fuel derived from petroleum but heavier than gasoline/petrol. Used to power diesel engines which burn this fuel using the heat produced when air is compressed.
2. A vehicle powered by a diesel engine.

verb (dieseled, dieseling)

1. To ignite a substance by using the heat generated by compression.
2. (of a petrol engine) To continue running after the ignition has been turned off.

The only reason the VW bug has a solenoid is to prevent it from dieseling.