What is open frame in bowling?

Open frame is a term used in bowling to describe a frame where a player fails to knock down all 10 pins on their first attempt. This results in an open space or gap between the pins that remain standing, which makes it easier for the opposing player to score higher. In addition to not being able to get a strike or spare, an open frame can also result in a lower overall score and reduce a player's chances of winning the game. Many seasoned bowlers try to avoid open frames by using different techniques, such as adjusting their throw angle or targeting specific pins.