Yaw is a nautical term that describes the movement of a boat or ship when it turns from side to side. It is also known as swerving, and is an important maneuver for navigating in tight spaces or avoiding obstacles. The term 'YAW' is derived from the Old English word 'gawian, ' which means 'to turn.' Nautically, swerving is a maneuver that requires skill and precision, and is used to avoid collisions or other dangerous situations.