A call to someone to participate in a competitive situation or fight to decide who is superior in terms of ability or strength
he accepted the challenge
A challenge against a jury, or against a particular juror, alleging a fact that, if proved, would disqualify such jury or juror as a matter of law.
A defendant’s or lawyer’s objection to a proposed juror, made without needing to give a reason
Find the strength or ability to respond adequately to (a challenging situation)