retelegraph
/ˌriːˈtɛlɪɡrɑːf/ /ˌriːˈtɛlɪɡraf/verb
[with object] To telegraph again; especially to transmit (a message, etc.) by telegraph for a second or further time; to send onwards by telegraph.
Origin
Mid 19th century (in an earlier sense). From re- + telegraph.