to conclude; to finalize; to put the finishing touches (on)
To fasten with a button or buttons.
To fasten all the buttons on a coat, or similar item of clothing, to keep warm.
To seal off (a military vehicle or facility).
To end something.
To announce the closing of a pub for the day.
To call a timeout.
To indicate that an activity, especially the taking of a test, is complete.
The expected time of arrival for participants in a performance event, e.g., a play or concert.