Definition of trophonius:
(N) :
(Ancient Greek: Τροφώνιος Trophōnios) a Greek hero or daimon or god—it was never certain which one—with a rich mythological tradition and an oracular cult at Lebadaea (Λιβαδειά; Levadia or Livadeia) in Boeotia, Greece.
(N) :
(1808 – after 1827) a British Thoroughbred racehorse and sire and best known for winning the classic 2000 Guineas in 1811.