Define tranche. tranche synonyms, tranche pronunciation, tranche translation, English dictionary definition of tranche. n. 1. A portion of a total, especially of a block of assets such as cash or securities: the riskiest tranche of the bond offering; money delivered in two...
A boil is a red, swollen, painful bump under the skin. It often looks like an overgrown pimple. Boils are often caused by infected hair follicles. Bacteria from the infection form an abscess, or pocket of pus. A boil can become large and cause severe pain. Boils most often happen where there is hair and rubbing. The face, neck, armpits, breasts, groin, and buttocks are common sites.
Swelling may be from an injury in the area, and the swelling will go down when the injury heals. Localized infection can also cause swelling of the groin lymph glands. When the swelling persists or is accompanied by other symptoms, you should contact a medical health care professional (Tips for Talking to Your Doctor).