The operating of a new engine (especially that of a motor vehicle) at less than its normal speed until proper working has been established.

(nonstandard) simple past tense and past participle of run

Used other than figuratively or idiomatically: see run, with. / To follow something through to completion or realization.

Alternative form of byrunning

Alternative form of byrunning

To charge at someone; to advance as though to attack.

A surname.

Third-person singular simple present indicative form of run at

present participle of run at

running.