In the military, if you’ve lost the bubble, then you can’t find your bearings. The term first referred to calibrating the position of aircraft and submarines. • The phrase the coast is clear may originate in watching for invaders...
A woman in Vancouver, Washington, wants to know the origin of the phrase the coast is clear, meaning “it’s safe to proceed.” It most likely has to do with a literal coast, whether from the perspective of a ship at sea or guards...