shut

• close, move to a closed position; block, obstruct; lock, bolt; confine; cease operation, halt activity
closed, fastened
if you shut something such as a door or window, or if it shuts, it closes. verb here but can also be used as a predicative adjective. e.g. the windows were all shut. you have to hold the trigger to keep it shut.
if you shut your eyes, you lower your eyelids so that you cannot see. verb here but can also be used as a predicative adjective. e.g. he lay with his eyes shut.
if you shut your mouth, you place your lips close together.
when a shop or other business shuts, or when the owner shuts it, it is closed and you cannot go into it until it opens again. verb here but can also be used as a predicative adjective. e.g. i'm afraid all the pubs will be shut.
if you shut something away, you keep it in a place where people cannot see it.
if a factory or business is shut down, it closes and stops working.
if an engine shuts down or if you shut it down, it stops working altogether, sometimes only for a short time.
see also shutdown.
if someone shuts you in a room or other confined space, they close the door so that you cannot leave.
if you shut yourself in a room, you stay in there and make sure nobody else can get in.
if you shut someone or something out, you prevent them from getting into a place.
if you shut out a thought or a feeling, you stop yourself thinking about it or feeling it.
if you shut up, you stop talking; an informal expression.
if someone shuts you up, they prevent you from talking; an informal expression.
if you are shut up in a building, room, or other confined space, you are kept there and cannot get out; an informal expression.