light springy buoyant substance that is the thick bark of a type of oak tree growing around the Mediterranean
bottle-stopper made of this
close the neck of (a bottle or similar container) tightly with a cork
"The baseball player stuffed his bat with cork to make it lighter"
我军把敌人的堡垒完全包围并封锁起来。
He kept his emotions corked up inside him.
他把感情深藏于内心。