1. A person who believes in Jesus Christ and refuses to give up their beliefes and dies for them.
2. A person who dies as a missionary or other sevice to Jesus.
St. Stephen was stoned to death
Felix Mantz was drowned
Many people was burned at the stake
But most importantly, Jesus Christ died on the cross for everyone's sins, yours, mine, and everyone elses. you can red his story in the book of Matthew, Mark, Luke, or John. Jesus is the ultimate christian martyr, and the reason everyone else chooses to become one.