Final answer:
In the context of sports, an illegal movement by a player with the ball within bounds can result in various penalties.
Step-by-step explanation:
When a player in possession of the ball, within bounds, progresses or moves illegally in any direction, it is typically referred to as a penalty in American football. Such illegal movements can include travelling or taking too many steps without dribbling in basketball or analogous penalties in other sports, such as a "false start" or "holding" in American football. However, if we relate this to the context of American football, it could be a reference to an illegal forward pass, a hold, or perhaps a penalty for "travelling" which in football terms is usually holding the ball and moving both feet without setting one foot as a pivot.