A triple squeeze in which you force an opponent to release control of one suit and then use the newly created winner in that suit to squeezed him again in the remaining two suits.
For example:
South plays the ♣A forcing West to relinquish control in one of the other three suits. South then cashes whichever suit West discards to squeeze him again in the other two suits.
This type of squeeze can be automatic but is more commonly positional, as here (East, if holding West’s cards, could escape the second squeeze by discarding a diamond).