escape-hatch

escape hatch

noun
1.
a hatch used for emergency escape, as from a submarine or aircraft.
2.
a means of avoiding a troublesome situation; a ready or handy way out.

Origin:
1920–25

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
escape hatch
 
n
a means of escape in an emergency, esp from a submarine

Collins English Dictionary - Complete & Unabridged 10th Edition
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