Available Definitions:
1) n. - One who, by his death, bears witness to the truth of the gospel; one who is put to death for his religion; as, Stephen was the first Christian martyr.
2) n. - Hence, one who sacrifices his life, his station, or what is of great value to him, for the sake of principle, or to sustain a cause.
3) v. t. - To put to death for adhering to some belief, esp. Christianity; to sacrifice on account of faith or profession.
4) v. t. - To persecute; to torment; to torture.