A shot while in the locker A reserve, normally economic; a last resource or prospect. Locker is actually a nautical phrase for the compartment on board a vessel in which can be stored ammunition, clothing, etcetera. Shot from the locker is practically stored ammunition; figuratively, it refers to some stash https://sociallweb.com/story13256538/how-much-you-need-to-expect-you-ll-pay-for-a-good-money