·noun Deliverance of a prisoner on security for his appearance at a day.
II. Mainprise ·vt To suffer to go at large, on his finding sureties, or mainpernors, for his appearance at a day;
— said of a prisoner.
III. Mainprise ·noun A writ directed to the sheriff, commanding him to take sureties, called mainpernors, for the prisoner's appearance, and to let him go at large. This writ is now obsolete.