Breakaway

1. A wild rush of sheep, cattle, horses, or camels (especially at the smell or the sight of water); a stampede.
2. An animal that breaks away from a herd.
3. an object designed to break off or shatter under impact, as a safety measure.
4. (Sport) the sudden emergence of one or more players or contestants from a clustered group, rushing toward a goal, as bicyclists in a race, or baketball players after a rebound has been caught.