humorous reference to words used in two-way radio communication to signify certain things. Roger is used as a response in radio communication to indicate that a message has been received and understood; wilco is short for will comply and means "I will comply with your request; over is used to signify that the sender is awaiting a reply to or acknowledgment of a transmission and out is used to end a communication and means that the message in completed. —Games Congress Gls (Approved 13.8.92)