A judicial writ, (usually simply termed a “capias,”) by which actions at law were frequently commenced; and which commands the sheriff to take the defendant, and him safely keep, so that he may have his body before the court on a certain day, to answer the plaintiff in the action. 3 Bl. Comm. 282; 1 Tidd, Pr. 128. The name of this writ is commonly abbreviated to ca. rcsp.