We don't have synonyms for graiae yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are graine, graeae and raiae.
(n) :
Alternative form of Graeae. [(Greek mythology) Three sisters, old women with grey hair — Deino (or Dino), Enyo, and Pemphredo (or Pephredo) — who shared a single eye and a single tooth. They were daughters of the sea-deities Phorcys and Ceto.]
(n) :
Alternative form of Graeae. [(Greek mythology) Three sisters, old women with grey hair — Deino (or Dino), Enyo, and Pemphredo (or Pephredo) — who shared a single eye and a single tooth. They were daughters of the sea-deities Phorcys and Ceto.]