shutshutshutsshutting2adjectivenot opensame meaningclosed: The restaurant is shut today. Is the door shut?shutshutshutsshutting1verb (shuts, shutting, shut, has shut)1to move, or to move something, so that it is not opensame meaningclose: Could you shut the door, please? The door shut behind me.2to stop being open, so that people cannot go theresame meaningclose: The shops shut at 5.30.shut downto close and stop working; to make something close and stop workingsame meaningclose down: The factory shut down last year.shut up (informal) to stop talking: Shut up and listen!speakingThis expression is quite rude. It is more polite to say ‘be quiet’.