Sign manual

//ˌsʌɪn ˈmanjʊəl// noun

Definitions

Noun
  1. 1
    An authentic signature; (especially), the signature of a sovereign, used to validate a formal document.

    "We were undeceived by the King's sign manual for our embodying, which was issued May 10th 1760."

  2. 2
    the signature of a sovereign on an official document wordnet

Etymology

From sign + manual, probably after Middle French signe manuel.

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