The term 'PASS ON A MESSAGE' can be summarized by the crossword solution 'RELAY, ' which is a five-letter word. RELAY is an action that involves passing on a message, usually from one person to another. It is often used in communication systems, such as telephone networks, where the message is relayed from one station to another until it reaches its destination. In other contexts, it can refer to the act of passing on information or instructions from one person to another.