CEFR B1

stopper

noun

Meaning

A plug or cork used to close the opening of a bottle, tube, or hole, preventing liquid or gas from escaping or entering.

Examples

  • She couldn't find the right-sized stopper for the bathtub, so the water kept draining.
  • The chemist carefully inserted a rubber stopper into the test tube to seal it.

Synonyms: plug, cork, bung, seal