stopper

blockage consisting of an object designed to fill a hole tightly

an act so striking or impressive that the show must be delayed until the audience quiets down

close or secure with or as if with a stopper

“She stoppered the wine bottle”

a remark to which there is no polite conversational reply

a playing card with a value sufficiently high to insure taking a trick in a particular suit

“if my partner has a spade stopper I can bid no trump”