Source : Webster's Revised Unabridged Dictionary (1913)

Quindecemvir \Quin`de*cem"vir\, n.; pl. E. {Quindecemvirs}, L.
   {Quindecemviri}. [L., from quindecim fifteen + vir a man.]
   (Rom. Antiq.)
   One of a sacerdotal college of fifteen men whose chief duty
   was to take care of the Sibylline books.