OESD in poker stands for Open-Ended Straight Draw, a hand that comprises four consecutive cards and can be completed from either end. It is a much more favorable hand than an Inside Straight Draw, which can only be completed with one card of a specific rank.
OESD Poker Example:
Let’s say you have a T9 hand, and the board reads J85 after the flop. This is an open ended-ended straight draw, as you can make a straight with either a queen or a seven on the turn or river.