An out is any card left in the deck that can complete our hand (and generally give us the best hand). For example, if we hold the 6789 straight draw, any Five or Ten is an out since it completes the straight. That would typically be a total of 8 outs, but it does depend on which cards are still in the deck and which cards are already ‘dead’.
An open raise is the first raise on the first betting round where we are the first player to enter the pot voluntarily. The most common example is in Hold’em, where the action gets folded around to us preflop. If we are the first to enter the pot with a raise, it’s known as an open raise. If a player has already entered the pot before us by limping, a raise is instead referred to as an is o raise rather than an open raise.
An open ended straight draw or OESD for short, refers to a straight draw that can be completed at either end. For example, if we hold 6789, we can catch either a Ten or a Five to complete our straight. There are usually 8 cards left in the deck that can complete our open ended straight, but it does depend on which cards have already dealt (especially in the case of Stud games).
One-gap means that there is a gap of exactly one rank between two cards. For example, if we are dealt 79s (Seven Nine suited) in Hold’em, it is referred to as a “suited one-gapper”. Although the term is primarily used to describe starting hands, it can technically be used to describe any scenario where two cards have a gap of exactly one rank.
Offsuit means that the suits of our cards don’t match. It is typically used to describe preflop holdings in Hold’em and Omaha. For example in Hold’em, when we get dealt 78o preflop (both of different suits) we refer to it as “Seven Eight offsuit” (as indicated by the ‘o’ next to 78). However, if we get dealt 78s (both of the same suit) we refer to it as “Seven Eight suited” (as indicated by the ‘s’ next to 78).
Nut low means the best possible low hand in games with a low hand ranking system. For example in Razz, the nut low is A,2,3,4,5 while in 2-7 Triple Draw the nut low is 2,3,4,5,7. The hand which constitutes the nut low will change depending on the board texture. For example, if the flop comes 247 in Omaha Hi/lo, the current nut low is A,2,3,4,7 made by any player with A3 in the hole.
