Lewis & Short

† martyrĭum, ĭi, n., = μαρτύριον, a testimony, sealed with one’s blood, to the truth of the Christian religion, martyrdom.

  1. I. Lit. (eccl. Lat.): martyrii palmae, Tert. Spect. 29; Greg. M. Dial. 3, 28: Domini martyrium, Hier. adv. Jovin. 1: sanguine martyrii, Prud. στεφ. 7, 9: sacri martyrii corona, Ambros, Off. 2, 28.
  2. II. Transf.
    1. A. The place where a martyr is buried, a martyr’s grave: martyria negat esse facienda, Tert. adv. Haer. 46; so Cod. Just. 1, 2, 16.
    2. B. A church dedicated to a saint: martyrium fabricare, Hier. Vita Hilar. 31.