blood blister

Century Dictionary and Cyclopedia

1. n. An effusion of blood-stained serum beneath the epidermis, forming a blister-like elevation.

Wiktionary

1. n. A blister filled with blood, usually caused by a sharp pinch to the skin.

GNU Webster's 1913

1. n. See under Blood.
2. n. a blister or bleb containing blood or bloody serum, usually caused by an injury.

WordNet 3.0

1. n. blister containing blood or bloody serum usually caused by an injury