What is the meaning of Detonator?

A device used to detonate an explosive device etc.

A small explosive device attached to the railhead to provide an audible warning when a train passes over it.

Any explosive whose action is practically instantaneous.

A gun fired by a percussion cap.

detonator (device used to detonate an explosive device)

detonator

detonator: a device used to detonate an explosive device etc.

second/third-person singular future passive imperative of dētonō

detonator (a device used to detonate an explosive device etc.)

detonator

Source: wiktionary.org