An inside straight draw, you got 4 cards to hit. Hand A player's best five card s
Four cards of a straight with a card in the middle missing. (ex: If you have a 9 and an 8 and the flop contains a 7, then you need a 6 in the turn or river. If a 6 comes, then you have made the gut shot straight draw.)
A straight made by drawing to a single card that fits in between the cards you are already holding. For example: If you have 10s-9s, the flop comes 8c-2c-6d, and the turn is the 7h, the gutshot straight was made on the turn.