To send a message to; to transmit a message to, e.g. as text via a cell phone.
I messaged her about the concert.
To send (something) as a message; usually refers to electronic messaging.
Please message the final report by fax.
To send a message or messages; to be capable of sending messages.
The runaway computer program was messaging non-stop.
To bear as a message.
The transmission of messages.