coop up

verb

1. To confine in a restricted place or situation

   “We ran for the better part of a mile without hearing anything more from the direction of the harbor, and then I reduced the speed to a walk, for the exercise was telling on us who had been cooped up for so long in the confined interior of the U-33. Puffing and panting, we plodded on until within about a mile of the harbor we came upon a sight that brought us all up standing.”

   “This was a fine day's outing for anybody who had been cooped up in the shops for a few months.”