Contusion /(kŏn*tū"zhŭn)/

Con·tu·sion

Contusion

n.
  1. The act or process of beating, bruising, or pounding; the state of being beaten or bruised.
  2. A bruise; an injury attended with more or less disorganization of the subcutaneous tissue and effusion of blood beneath the skin, but without apparent wound. (Med.)