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Fingerprint (Noun)

A smudge made by a (dirty) finger.

Nouns denoting attributes of people and objects.

She carefully cleaned the smudge on the mirror, which was clearly a fingerprint left behind by her brother.
After wiping the counter, a faint fingerprint was still visible on the granite surface.
He picked up the phone, only to find a dirty fingerprint covering the entire screen.
A fingerprint smudge on the new tablet's display made it hard to see the icons clearly.
Her small child's tiny fingerprint was still visible on the dusty windowsill after days of rain.

A print made by an impression of the ridges in the skin of a finger; often used for biometric identification in criminal investigations.

Nouns denoting communicative processes and contents.

A generic term for any identifying characteristic; "that tax bill had the senator's fingerprints all over it".

Nouns denoting communicative processes and contents.

The proposal had the CEO's fingerprints all over it, indicating that she was heavily involved in its development.
The politician's speech had the fingerprints of a seasoned writer, with its clever turns of phrase and persuasive rhetoric.
The painting had the artist's fingerprints all over it, from the bold brushstrokes to the vivid color palette.
The policy change had the union's fingerprints on it, reflecting their priorities and concerns.
The innovative product design had the fingerprints of a team of expert engineers, with its clever solutions to complex problems.