What is "yugoloth"

Yugoloths (formerly known as daemons) are a group of monsters in the Dungeons & Dragons fantasy role-playing game. As a category of creature, they are comparable to devils and demons. Yugoloths are neutral evil natives of the lower planes of the Bleak Eternity of Gehenna and the Gray Waste of Hades. In the third edition of the Forgotten Realms, they are native to the "Blood Rift" plane.