What is Mittimus?

Legal Definition
Crim. law, practice. A precept in writing, under the hand and seal of a justice of the peace, or other competent officer, directed to the gaoler or keeper of a prison, commanding him to receive and safely keep, a person charged with an offence therein named until he shall be delivered by due course of law. Co. Litt. 590.
-- Bouviers Law Dictionary
Legal Definition
In English law. A writ used in sending a record or its tenor from one court to another. Thus, where a nul tiel record is pleaded in one court to the record of another court of equal or superior jurisdiction, the tenor of the record is brought into chancery by a certiorari, (q. v.t) and thence sent by mittimus into the court where the action is. Tidd, Pr. 745. In criminal practice. The name of a precept in writing, issuing from a court or magistrate, directed to the sheriff or other officer, commanding him to convey to the prison the person named therein, and to the jailer, commanding him to receive and safely keep such person until he shall be delivered by due course of law. Pub. St. Mass. 1882, p. 1293. Connolly v. Anderson, 112 Mass. 62; Saunders v. U. S. (D. C.) 73 Fed. 786; Scott v. Spiegel, 67 Conn. 349, 35 Atl. 262.
-- Black's Law Dictionary
Legal Definition
-- Ballentine's Law Dictionary