Can refer to a person or an object that causes bleeding.
El sangrador fue llevado al hospital tras sufrir un accidente en la carretera, donde recibió atención inmediata.
The bleeder was taken to the hospital after suffering an accident on the road, where he received immediate care.
El paciente era un sangrador frecuente, lo que preocupaba a su médico durante las revisiones rutinarias.
The patient was a frequent bleeder, which worried his doctor during routine check-ups.