Chāl'len-ger, n.
n. 1. One who challenges; one who invites to combat; one who defies. He would unhorse the lustiest challenger. Shak.
Sense 2. One who claims superiority; one who claims any thing as his right. Hooker.
Sense 3. (Law.) One who objects to a juror, or a jury, at the trial of his cause.