An empty or unused shell or case, often referring to a device or structure lacking content or function.

खाली शेल

English Usage: The project was considered a blank shell until the team filled it with actual content.

Hindi Usage: यह परियोजना तब तक खाली शेल मानी गई जब तक टीम ने इसमें असली सामग्री नहीं भरी।