(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"
close or secure with or as if with a stopper; "She stoppered the wine bottle"; "The mothers stoppered their babies' mouths with pacifiers"
attracting and holding interest as if by a spell; "read the bedtime story in a hypnotic voice"; "she had a warm mesmeric charm"; "the sheer force of his presence was mesmerizing"; "a spellbinding description of life in ancient Rome"