Answer: corking

AnswerCrossword Clue
CORKINGStopping, in a way
CORKINGExcellent: Slang.
corkingIllicitly hollow out (a baseball bat) and fill it with cork to make it lighter
corkingClose or seal (a bottle) with a cork
corkingCORK, to stop up
corking(of wine) Spoiled by tannin from the cork
corkingDraw with burnt cork