bleeder

Bleeder is a term with multiple meanings across different fields. In medical and biological contexts, a bleeder is a person who bleeds or an area that bleeds. It is commonly used to describe patients with bleeding disorders or coagulopathies, such as hemophilia or von Willebrand disease, and may also refer to procedures or conditions that produce bleeding.

In sports, particularly combat sports, a bleeder is a fighter who bleeds during a match, often from a cut above the eye or on the scalp. The term is used descriptively, and a fighter who bleeds easily may be described as a bleeder. The boxer Chuck Wepner has been nicknamed "The Bayonne Bleeder" due to the bleeding that occurred in some of his bouts.

In engineering and mechanical contexts, a bleeder is a valve or small opening that releases air, gas, or liquid from a system to purge trapped pockets and to prevent pressure buildup. Examples include brake system bleeders and radiator or boiler bleeders.

In popular culture, Bleeder or The Bleeder has appeared as a title or nickname. The nickname for the boxer Chuck Wepner has influenced media portrayals and discussions of his life and career, illustrating the term’s cross-domain usage.