plʌɡ ˈstɒpəl ˈstɒpəl close or secure with or as if with a stopper She stoppered the wine bottle The mothers stoppered their babies' mouths with pacifiers blockage consisting of an object designed to fill a hole tightly (bridge) 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 a remark to which there is no polite conversational reply an act so striking or impressive that the show must be delayed until the audience quiets down