double as

✍ Definition: Serve as two things at the same time 🏠✌️
✅ Example: The room doubles as a home office and a gym

bookcase at the back of the room that "doubled as" a secret door
قفسه ی کتاب ته اتاق که کار یک در مخفی را هم انجام می داد.

دو منظوره