intransitive. Of lightning: to flash. Also figurative and in figurative contexts: to flash like lightning; to dart. Also with out or forth. Now rare.

To move like a flash, pass with lightning speed. Also with cognate object to flash its way. Also with round.

intransitive. colloquial. To rush along vigorously; to move at great speed. Formerly also figurative: to pursue a reckless course. See also phrases 1.

intransitive. gen. To move like a rocket; esp. to move rapidly; to travel at great speed. Frequently with adverb of direction.

intransitive. To cycle or motor at high speed. Also in extended use, and with away, up.

intransitive. To travel like an electric current.