a stopper for closing a hole in a cask or barrel

stopper

the light, brown, tough outer bark of a kind of tree (called the cork-oak)

type of plug

a piece of rubber etc used to stop up a hole, e.g. in a bath; a device used for making a connection with a supply of electric current

stopper

an object that closes an opening of a bottle, pipe etc

plug

a long piece of cotton wool etc, used inside a woman to collect blood during her period

stopper