Black's Law Dictionary (2nd edition)dictionaries

Incipitur

Lat. It is begun; it be-gins. In old practice, when the pleadings in an action at law, Instead of being recited at large on the issue-roll, were set out merely by thelr commencements, this was described as -entering the incipitur; i. e., the begin-ning

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