Wiktionary
vb. (context sports English) To show someone a red card, and dismiss them from the playing area; a red-card.
WordNet
Usage examples of "send off".
If you have any political prisoners whom you can send off safely to keep her company, I would like you to send her.
Tomorrow, if he could find a ride, he would go to the base camp, pick up his other things, share his audio and video recordings with Bertol and Konni, and send off a report to Iryala via the message pod.
Let me send off messengers without delay to Lord Widdrington, Tom Errington, of Beaufront, John Shaftoe, Swinbourn, Charleton, Clavering, and others in the county, to collect all their retainers.
And now, after being both present at the engagement between the Russians and Tartars before the town, they had left just as the struggle broke out in the streets, and ran to the telegraph office, so as to send off their rival dispatches to Europe, and forestall each other in their report of events.
Perhaps Ned should not have been so quick to send off half his guard, and all his best swords among them.
The ruby glittered, seemed to send off crimson sparks, as if it, too, fought the Healing.
Then I'm going to send off some letter cubes and a report on Tyss.
And although we can't send off the criminals as colonists to a pleasant place like Hell's-a-comin', the CoDominium keeps dumping involuntary colonists on us.
For your peace of mind, I might mention that before his death ghem-Colonel Millisor managed to send off a confirmation of Helda's destruction of the Bharaputran cultures to his superiors.
We'll go to the nearest post office, and send off the wire ourselves.
They'd have assumed that Melissa would want to send off a radio message reporting on today's meeting with the earl of Strafford.
Brooke remembered that there was a packet which he had omitted to send off from the Grange, and he bade everybody hurriedly good-by.