BL

BL is an acronym which may refer to one of the following:
 * Bloodlust, a Horde shaman ability.
 * Blasted Lands, a zone located in the southeastern part of the Eastern Kingdoms.
 * Badlands, a zone located in the middle region of the Eastern Kingdoms.
 * The Burning Legion, a vast army of demons, infernals, and other corrupted races.