What is Ancillary Attachment?

Legal Definition
One sued out in aid of an action already brought, its only office being to hold the property attached under it for the satisfaction of the plaintiff's demand Templeton v. Mason, 107 Tenn. 625, 65 S. W. 25; Southern California Fruit Exch. v. Stamm, 9 N. M. 361. 54 Pac. 345.
-- Black's Law Dictionary