close down—
1. (of a shop, factory, etc.) cease doing business; stop production:
- The shop will be closing down for good on Saturday, so everything is half price.
2. (of a radio or TV station) stop broadcasting for the day:
- This station is now closing down and we wish you all good-night.
shut down— = close down 1:
- The whole company shuts down for three weeks’ holiday every year.