stopper
stop|per /st'ɒpər/ (stoppers)
[N-COUNT]
A stopper is a piece of glass, plastic, or cork that fits into the top of a bottle or jar to close it.
...a bottle of colourless liquid sealed with a cork stopper.
see also show-stopper
[N-COUNT]
A stopper is a piece of glass, plastic, or cork that fits into the top of a bottle or jar to close it.
...a bottle of colourless liquid sealed with a cork stopper.
see also show-stopper