Something unpaid. A debt, for example, is owing while it is unpaid, and whether it be due or not. Coquard v. Bank of Kansas City, 12 Mo. App. 261; Mus-selman v. wise, 84 Ind. 248; Jones v. Thoinp-son, 1 El., Bl. & El. 64
Source: Black's Law Dictionary 2nd Ed (1910)
