Join Date: Jan 2009
Posts: 17,446
It means there are 4 cards on the board that can be connected to a straight with one hole card.
For example a board of AKQJ5 where a player with Tx in his hand has a straight. Or QJ98 for the same Tx hand.
As opposed to hands where no straights are possible or boards where a player needs both hole cards to make a straight like AJ972.
