To dispatch (a message, letter, telegram, etc.) by messenger, post, or other means of communication. So to send cards (of invitation).

to send (a person) word: to transmit a message (to a person); to inform, notify. Const. of, clause, or infinitive.

transitive. To dispatch (messengers) here and there; also absol. Obsolete.

transitive. To bring or place (a thing) before or into the hands of a person for acceptance; to offer… To deliver or hand over (a letter).

transitive. To send, communicate, or utter (something) as a message; to send by messenger; spec. to transmit by means of a communication network, as…

transitive. To send a messenger to (a person, etc.).

Originally U.S. transitive. To call, search for, or contact by means of a pageboy. Now historical and rare.