Pigeon-hole messagebox
A pigeon-hole messagebox (commonly referred to as a pigeon-hole or pidge, a cubbyhole (often shortened to "cubby") or simply as a mailbox in some academic or office settings) is an internal mail system commonly used for communication in organisations, workplaces and educational institutes in the United Kingdom and other countries. Documents and messages are placed in a person's pigeon-hole for them to collect; they can reply by putting a response inside the sender's pigeon-hole. In medieval times pigeons were kept as domestic birds, not for racing but for their meat. Pigeon holes were the openings set in a wall or a purpose-built pigeon cote in which the birds nested. By 1789, the arrangement of compartments in writing cabinets and offices used to sort and file documents had come to be known as pigeon holes because of their resemblance to the pigeon cote.