D defs.my
Entry 1 sense Webster, 1913

Allograph

/ăl'-əg-răfˌ/ · Al·lo·graph · IPA /ˈæləɡɹæf/
01 n. A writing or signature made by some person other than any of the parties thereto; -- opposed to autograph.
  1. 1.
    A writing or signature made by some person other than any of the parties thereto; -- opposed to autograph.