Verb: run down
Meaning: Hit a pedestrian with a vehicle
The minicab RAN him DOWN on the zebra crossing.
Meaning: Lose energy or power
You should only recharge the battery when it has fully RUN DOWN.
Meaning: Criticise, disparage
They’re always RUNNING me DOWN and I am sick and tired of it.
Meaning: Find the source or origin of something
The police RAN DOWN all the leads they had and caught them.