părēlĭon

I. a mock sun, parhelion: parelia sunt imagines solis in nube spissā et vicinā in modum speculi. Quidam parelion ita definiunt: nubes rotunda et splendida, similisque soli, Sen. Q. N. 1, 11, 2: solent et bina fieri parelia, id. ib. 1, 13, 1.