Now chiefly historical. transitive. To send, transmit, or announce (news, a message, etc.) by telegraph (telegraph, n. 1a, 3a). Often with clause…

To express, utter, or communicate by a flash or flashes; esp. in modern use, to send (a message) along the wires of a telegraph.

transitive. To telegraph again (in various senses); esp. to transmit (a message, etc.) by telegraph for a second or further time; to send onwards by…

transitive. colloquial. To send (a message) electronically, esp. by telegraph (cf. telegraph, v. 2a). Also: to send (a person) an electronic…

transitive. To send (news, information, etc.) by telegram. Often (esp. in earlier use) with that-clause as object; also with direct speech as object.

transitive and intransitive. To transmit (a message, news, etc.), or communicate, by submarine telegraph. (Const. as in to telegraph.)