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MAINPRISE, Eng. law. The taking a man into friendly custody, who might
otherwise be committed to prison, upon security given for his appearance at
a time and place assigned. Wood's Inst. B. 4, c. 4.
2. Mainprise differs from bail in this, that a man's mainpernors are barely his sureties, and cannot imprison him themselves to secure his appearance, as his bail may, who are looked upon as his gaolers, to whose custody he is committed.. 6 Mod. 231; 7 Mod. 77, 85, 98; Ld. Raym. 606; Bac. Ab. Bail in Civil Cases; 4 Inst. 180. Vide Mainpernors. Writ of Mainprise; and 15 Vin. Ab. 146; 3 Bl. Com. 128.