"Restricted" refers to something that is limited or controlled in access or use. This term can apply to various contexts, such as information, areas, or activities. For example, a restricted area may be off-limits to unauthorized personnel for safety or security reasons. In the context of information, "restricted" often indicates that certain data is not available to the general public. This can include classified documents in government, which are kept secret to protect national security, or restricted access to online content that requires special permissions to view.