Black's Law Dictionary (2nd edition)dictionaries

Warrantia Diei

A wrlt which lay for a man who, having had a day asslgn-ed him personally to appear in court in any action In which he was sued, was in the mean time, by commandment, employed in the king’s service, so that he could not come at the day assigned. It was directed to the justices that they might not record him in default for that day. Cowell

Source: Black's Law Dictionary 2nd Ed (1910)