In a standard forcing game, you the defender, may have four (or more) trumps, and ypu lead a long suit in which declarer is void in order to force him to ruff, thereby shortening his trumps to your number (or less).
In an uppercut situation, you might have something like Qx. Nevertheless, if you lead a long suit in which both your partner and declarer are void, your partner ruffs with a J, and declarer (sitting to your right with AK ) is forced to overuff with a king, you and partner have "shortened" his high trumps enough so that he can no longer capture your queen with AK. So is this a special case of a forcing game?
And suppose you are declarer (South) and the final trumps are Q in your hand, 2 in dummy, JT in East. If you lead a suit in which dummy and East are void, and dummy ruffs with his 2, forcing an overuff with the T, so you can now draw East's last trump, does this work like an uppercut? Is there a special name for this kind of play?