From Rigpa Wiki
Naga (Skt. nāga; Tib. ཀླུ་, lu; Wyl. klu) — serpent spirits classified as one of the eight classes of gods and demons, or as animals or demi-gods that live beneath the surface of the earth or in the water.
Virupaksha, the guardian king of the West, is the leader of the nagas.
- Serpentine water spirits (Dorje & Coleman)