run down
phrasal verb with run verb uk/rʌn/ usrunning | ran | run
to gradually end an organization's, industry's, etc. operations:
be run down The country's nuclear industry is being run down.
run sth down The president had promised to run down all military operations in the region.
The farm was a lot of work, but he did not want to let it run down.
to gradually use up a supply of something until it has all gone:
run sth down We've been running down our stock of the old model to make room for the new one.
If you leave it switched on overnight the battery will run down.