- a person or thing that challenges.
- Boxing. a boxer who fights a champion for his championship title.
- Radio. interrogator(def 2).
- (initial capital letter, italics) U.S. Aerospace. the second space shuttle to orbit and return to earth: exploded 1½ min. after launch on Jan. 28, 1986, causing the death of all seven on board.
Origin of challenger
Examples from the Web for challenger
It was not until after the Challenger accident that the folly of this approach was realized.Can Anyone Make Space Safe for Civilians?
November 4, 2014
It could have had a burn-through like Challenger Shuttle, but I would have thought that would take longer.Clues From SpaceShipTwo’s Wreckage: Did the Crew Compartment Fail?
November 2, 2014
Incumbent Democrat Kay Hagan is steadily but narrowly leading GOP challenger Thom Tillis.Who Are the Judicial Activists Now?
October 7, 2014
The president wants to stay; the challenger wants to go back to his hotel.Behind the Scenes With a ‘Site Agent’: The Secret Service’s Hardest Job
October 2, 2014
He is technically running against incumbent Republican Mitch McConnell and Democratic challenger Alison Lundergan.White Supremacist Runs For Senate in Kentucky
September 21, 2014
I say, Rector, did you really know a Challenger in the 'nineties?Hall-Marked and Others (From Six Short Plays)
"Thou wert the challenger, O Marzak," his father reminded him.The Sea-Hawk
There and then Locasto seemed about to spring on his challenger.The Trail of '98
Robert W. Service
The challenger used a fierce Italian oath, and by it he knew that it was Pietro.The Doctor of Pimlico
William Le Queux
Well, gentlemen, I am not the challenger; the challenge comes from you.A Hungarian Nabob
Word Origin and History for challenger
late 13c., "a claimant;" mid-14c., "one who makes false charges;" mid-15c., "one who disputes something, objector," from Anglo-French chalengeour (Old French chalongeor "slanderer, petitioner, plaintiff"), agent noun from challenge (v.). Specific sense of "one who calls out another in a contest" is from 1510s.