to send: to make a person, a message, or a written order go out from you to someone else
This is the ordinary verb for sending in the Aramaic sections of Ezra and Daniel, and nearly every use of it sits inside an imperial chain of command. Letters and reports travel up to the king, replies and decrees travel back down, and officials go out with royal authority behind them. The word itself says only that something left the sender and headed toward someone else; the setting supplies what left.
Because the sending is so often official, what was sent frequently goes unnamed. A governor "sends" to the king and the reader supplies the letter; a king "sends" and the reader supplies either the written order or the men carrying it. English almost always has to name the thing sent even where the Aramaic does not.
Two uses reach past ordinary correspondence. God is the sender in Daniel, dispatching his angel to rescue three men from a furnace and Daniel from a pit of lions. And twice what is sent is a hand: the hand that writes on the palace wall in Daniel 5, and, in Ezra 6:12, a hand reaching out to tamper with the rebuilt temple.
The Hebrew verb this one answers to (שָׁלַח) covers a much wider field, including letting a captive go, dismissing someone, and divorcing a wife. The Aramaic word stays close to dispatching.