cork

The plug in the mouth of a bottle (especially a wine bottle).

A small float usually made of cork; attached to a fishing line.

(botany) outer tissue of bark; a protective layer of dead cells.

A port city in southern Ireland.

Outer bark of the cork oak; used for stoppers for bottles etc.

Close a bottle with a cork.

Stuff with cork.

“The baseball player stuffed his bat with cork to make it lighter”