adv. or adj. phr. 1. In a hurry; hurrying. Jane called "Help!" and Tom came on the run. Modern mothers are usually on the run. 2. Going away from a fight; in retreat; retreating. The enemy soldiers were on the run.
ON THE RUN
Meaning of ON THE RUN in English
American idioms English vocabulary. Английский словарь американских идиом. 2012