walkie-talkie

noun2

1. •
   A portable, bidirectional radio transceiver, usually one of a pair.

   • It is intended to equip the yard foremen and shunters with "walkie-talkie" apparatus to keep them in close touch with the control office. — 1962
2. •
   (rare) A walk and talk.

   • It could be that her walkie-talkie with Naylor had concerned a private matter not connected with what was about to happen to him, ... — 1947