the sacrifice of a bull, followed by the baptism of neophytes in the blood, as practiced in the ancient rites of Mithras or Cybele.
2.
Fine Arts.a representation of the killing of a bull, as in Mithraic art.
Origin: 1690–1700; < Late Latin < Greektaurobólion, equivalent to tauroból(os) bull sacrifice (taûro(s) bull + bólos a cast, throw, akin to bolḗ a wound, bállein to throw) + -ion diminutive suffix