Source : WordNet®

fingerprint
     n 1: biometric identification from a print made by an impression
          of the ridges in the skin of a finger; often used as
          evidence in criminal investigations
     2: a generic term for any identifying characteristic; "that tax
        bill had the senator's fingerprints all over it"
     3: a smudge made by a (dirty) finger [syn: {fingermark}]

fingerprint
     v : take an impression of a person's fingerprints