Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.
  • Ballentine's Law Dictionary

    A signed blank instrument to be filled in and used by another without restriction. See 2 Pa. St. 200, 44 Am. Dec. 190.

  • Black's Law Dictionary: 2nd Edition

    A white sheet of paper; an instrument signed, but otherwise left blank. A sheet given to an agent, with the principal's signature appended, to be flli-ed up with any contract or engagement as the agent may see fit. Hence, metaphorically, unlimited authority.