a false start
1. In a sporting event, a situation in which one player or team begins before the official signal has been given. The team was issued a penalty by the referee after the false start.
2. An unsuccessful attempt to begin something. After several false starts, Gina was finally able to make some progress in writing her term paper.
(make) a false ˈstartan attempt to begin something that is not successful: After a few false starts, I finally managed to work the fax machine. ♢ He made a few false starts early on in his acting career, but then found success with the Royal Shakespeare Company.
In sport, a false start is a situation when a competitor in a race starts before the official signal has been given.