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bail out

Meaning 1
to take water out of a boat; to parachute out of a plane that is going down
Sentence 1
Bail out the ship. We're sinking. We better bail out of the plane. We're on fire.
Meaning 2
to help, to save
Sentence 2
The government is bailing out the savings and loan banks.

Derivation

In boating or sailing the term,, bail out, is used to save the boat. In parachuting it is used to get out of the plane.