D defs.my
Entry 1 sense Webster, 1913

Carte blanche

/kärt-blänsh/ · Carte· blanche · IPA /(ˈ)kɑɹt ˈblɑn(t)ʃ/
01 A blank paper, with a person's signature, etc., at the bottom, given to another person, with permission to superscribe what conditions he p…
  1. 1.
    A blank paper, with a person's signature, etc., at the bottom, given to another person, with permission to superscribe what conditions he pleases. Hence: Unconditional terms; unlimited authority.