The term 'SECRET KEY TO ADMISSION' can be broken down into two parts: the secret key and admission. The secret key is a PASSWORD of 8 letters, which is used to gain access to something that is otherwise restricted or hidden. Admission is the act of being allowed to enter or participate in something, such as a school, event, or organization. Therefore, the term 'SECRET KEY TO ADMISSION' refers to a PASSWORD that is used to gain access to something that is otherwise restricted or hidden, such as a school, event, or organization.