(transitive) To plug; to stop up.

A valve, tap or faucet which regulates the flow of liquid or gas through a pipe.

(Britain) A large, hard, spherical sweet/candy that would completely fill the mouth.

A pause or halt of some activity. / Something that forms an obstacle to continued activity; a blockage or obstruction.

Alternative spelling of showstopper

Alternative spelling of showstopper

(Australia, slang) A topic of conversation which is controversial and of contemporary significance. Hence, a social gaffe.

(sports) Additional time added to the end of a match, or period of a match, in order to compensate for time lost due to any stoppages of play.

(nautical) A knot placed in a rope either to prevent the end from fraying, or to prevent it from passing through a hole.

(slang) A television broadcast that causes the viewer to stop flipping through channels with their remote control and watch it.