a way of referring to somebody who has a disability of some sort伤残的;有残疾的
a competition for physically challenged athletes残疾运动员的比赛
(humorous)I'm financially challenged at the moment (= I have no money).我眼下身无分文。
Challenged was intended to be a polite way of referring to somebody with a disability but it soon came to be used in a humorous way and is now no longer considered very polite.