Lewis Short
martyrĭum (noun N) = μαρτύριον:
* A testimony, sealed with one's blood, to the truth of the Christian religion, martyrdom.
* 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.
* Transf.
* 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.
* A church dedicated to a saint: martyrium fabricare,Hier. Vita Hilar. 31.
Charlton T. Lewis, Charles Short, A Latin Dictionary