Green’s Dictionary of Slang

(US) to renege on one’s debts.

1829		Mass. Spy 10 June n.p.: If you hadn’t a nig’d [...] you might have had better luck [DA].
1859		Harper’s Mag. Mar. 568/2: If you have got any trumps you had better play them and not undertake to nig any more! [DA].
1939		Howsley Argot: Dict. of Und. Sl.
1949		Monteleone Criminal Sl. (rev. edn).