The term "middle rack" refers to a specific position or level within an organization, hierarchy, or system. It can be used in various contexts such as in business, government, or any other type of structure that has multiple levels of authority or responsibility. In this sense, the phrase means being at the intermediate or mid-level tier of the organization, between higher and lower ranks. For example, if an organization is divided into three main departments - top management, middle management, and frontline staff - then "middle rack" would refer to the middle management level. Similarly, in a hierarchy of authority within a company, being on the "middle rack" could mean holding a position that falls between senior executives and junior employees.