stopper
(US plug) n object that fits into and closes an opening, esp the top of a bottle or pipe 阻塞物; 堵塞物; (尤指)瓶塞, 管塞; 栓
put the stopper back into a bottle 把瓶塞再塞在瓶子上. =>illus at bottle 见 bottle 插图. stopper, v [Tn]
close (sth) with a stopper (用塞子等)塞住(某物).