What is the meaning of Cork?

noun

• Outer bark of the cork oak; used for stoppers for bottles etc..
• Botany) outer tissue of bark; a protective layer of dead cells.
  • synonyms: phellem
• A port city in southern Ireland.
• The plug in the mouth of a bottle (especially a wine bottle.
  • synonyms: bottle cork
• A small float usually made of cork; attached to a fishing line.
  • synonyms: bob, bobber, bobfloat

verb

• Close a bottle with a cork.
  • synonyms: cork up
• Stuff with cork.
  • usage: "The baseball player stuffed his bat with cork to make it lighter"