Dictionary definitions: 1) to retreat during a military action; especially: to flee in panic. 2) to depart especially in a hurry.
Many people are preparing for emergencies. This includes having a bug out bag or 72 hour kit, food/water storage, etc. This also includes having some place to go to if you cannot stay in your home during the emergency/catastropie. Having a bug out location away from cities that contains food, water, and shelter may be a good idea for many.
Gilmore, Idaho is a great place for such bug out locations.
To learn more about Bugging Out, visit the links below and also search the web: