telegraph
/ˈtɛləˌgræf/ /Brit ˈtɛlɪˌgrɑːf/
noun
plural -graphs
[noncount] :an old-fashioned system of sending messages over long distances by using wires and electrical signals
[count] :a device used for sending or receiving messages by telegraph
verb
-graphs; -graphed; -graphing
to send (a message) by telegraph [+ obj]
[+ obj] :to send a telegram to (someone)
[+ obj] :to make (something that you are about to do or say) obvious or apparent by the way you move, look, etc.
US