What is Aggrieved Party?

Legal Definition
Under statutes granting the right of appeal to the party aggrieved by an order or judgment, the party aggrieved is one whose pecuniary interest ls directly affected by the adjudication; one whose right of property may be established or divested thereby. Ruff v. Montgomery, 83 Miss. 185, 36 South. 67 ; McFarland v. Pierce, 151 Ind. 546, 45 N. E. 706; Lamar v. Lamar, 118 Ga. 684, 45 S. E. 498 ; Smith v. Bradstreet, 16 Pick. (Mass.) 264; Bryant v. Allen, 6 N. H. 116; Wiggin v. Swett, 6 Mete. (Mass.) 194, 39 Am. Dec. 716; Tillinghast v. Brown University, 24 It. I. 179, 52 Atl. 891; Lowery v. Lowery, 64 N. C. 110; Raleigh v. Rogers, 25 N. J. Eq. 506. Or one against whom error has been committed. Kinealy v. Mackiin, 67 Mo. 95.
-- Black's Law Dictionary