› positioned inside or within the limits of something, or contained, surrounded, or enclosed by something: There’s a cup in the cabinet. Anne is still in bed. Don’t stand in the driveway. He’s always looking at himself in the mirror. Clarice lives in Orlando. He was in prison (= a prisoner). Erika is still in school (= still a student). He has a pain in his shoulder. in and out › If you are in and out of a place, you go there and leave, often repeatedly: Since the accident, she’s been in and out of the hospital several times.