National Fingerprint File
28 CFR § 20.3(o) [28 CFR PART 20—CRIMINAL JUSTICE INFORMATION SYSTEMS]
As used in these regulations:
(o) National Fingerprint File
or “NFF” means a database of fingerprints, or other uniquely personal identifying information, relating to an arrested or charged individual maintained by the FBI to provide positive identification of record subjects indexed in the III System.