2009, L. K. Bandyopadhyay, ‎S. K. Chaulya, ‎P. K. Mishra, Wireless Communication in Underground Mines: RFID-based Sensor Networking, Springer, ISBN 0387981659A walkie-talkie is a handheld, portable, two-way radio transceiver. It includes a half-duplex channel (only one radio transmits at a time, though any number can listen) and a push-to-talk switch that starts transmission.
(rare) A walk and talk.
1947, Nero Wolfe, Too Many Women: A Nero Wolfe Novel:It could be that her walkie-talkie with Naylor had concerned a private matter not connected with what was about to happen to him, ...
1993, B. Kaye Olson, Energy Secrets for Tired Mothers on the Run, Health Communications, ISBN 1558742506, page 153:Go on a walkie-talkie. Everyone goes on a 15-minute brisk walk and talks about their day.
