goldback

/G OW1 L D B AE1 K/
noun
  1. 1

    (US, slang, historical) A kind of gold certificate with an orange back.

  2. 2

    Any member of species Pentagramma triangularis of ferns.

  3. 3

    Any member of genus Pityrogramma of ferns.

  4. 4

    A fractional gold commercial product marketed as a local currency and commodity which has seen limited use in some U.S. states, shaped like a banknote but containing a small amount of 24-karat gold.