Cabeiri or Kabiri (Phœn) Deities, held in the highest veneration at Thebes, in Lemnos, Phrygia, Macedonia, and especially at Samothrace. They were mystery gods, no profane having the right to name or speak of them. Herodotus makes of them Fire-gods and points to Vulcan as their father. The Kabiri presided over the Mysteries, and their real number has never been revealed, their occult meaning being very sacred.
Source: H.P.Blavatsky - The Theosophical Glossary