Hematoma
Hematoma (hē`mȧ*tō"mȧ or hem`ȧ*tō"mȧ) , noun
[New Latin See Hema-, and -oma.]
(Medicine) A localised leakage of blood from the blood vessels into nearby tissues, usually confined within a tissue or organ; especially, a local swelling produced by an effusion of blood beneath the skin, which may clot and discolor the affected area.