n. The act of interdicting; authoritative prohibition; declaratory estoppel.n. In law, judicial restraint imposed upon one who, from unsoundness of mind, weakness, or improvidence, is incapable of managing his own affairs, or is liable to imposition.n. In Roman law, an edict or decree of the pretor to meet the circumstances of a particular case, but granted usually from considerations of a public character. See interdict, n., 2.n. Same as interdict, n., 4.