the.com/escape pod

means A small, self-contained capsule that detaches from a larger spacecraft to carry crew to safety when the main vessel is doomed.

from A compound built from two separate borrowings: 'escape' traces back through French 'eschaper' to Vulgar Latin, roughly 'to slip out of one's cape' — leaving pursuers holding just the cloak. 'Pod' is far younger, an early-20th-century word first used for seed casings and clusters of whales, later borrowed by engineers and science fiction writers for any small, detachable module. The phrase itself is a product of 20th-century pulp and film sci-fi, not an old or formal technical term — fiction built the lifeboat before anyone built the ship.