run down
(to crash against and knock down or sink)
- Their son was run down by a bus outside school.
- The ship ran down a small fishing boat in thick fog.
(to criticize someone in an unfair way)
- You are always running her down in front of other people.
- She never gave me any advice, nor did she run me down.
(loses power)
- My car won’t start because the battery has run down.
- You can recharge these batteries when they run down.