Meaning of goldback | Babel Free

Definitions

1. A kind of gold certificate with an orange back.
   US, historical, slang
2. 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.
3. Any member of species Pentagramma triangularis of ferns.
4. Any member of genus Pityrogramma of ferns.

CEFR level