Real Dictionary

bail out
phrasal verb: If a pilot bails out of an aircraft that is crashing, he or she jumps from it, using a parachute to land safely.
phrasal verb: If you bail someone out, you help them out of a difficult situation, often by giving them money.
phrasal verb: If you bail someone out, you pay bail on their behalf.

bail out in American English
to make a parachute jump from an airplane
to parachute from an aircraft in an emergency

bail out in British English
to make an emergency parachute jump from an aircraft
noun: an act of bailing out, usually by the government, of a failing institution or business by the provision of financial aid