Held in abeyance; reserved to be dealt with later; on hold, on the back burner: The plan's in cold storage for now/ Well, let's just keep that one in the deep freeze for a few months(1940s+)
Idioms and Phrases with in cold storage
in cold storage
In a state of abeyance or postponement. For example, We can't consider these design changes now; let's put them in cold storage for a year or so. This expression alludes to the literal storage of food, furs, or other objects in a refrigerated place. [ ; late 1800s ]