goldback

See also: Goldback

English

Etymology

From gold +‎ back.

Noun

goldback (plural goldbacks)

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

   Synonym: yellow boy

2. Any member of species Pentagramma triangularis of ferns.
3. Any member of genus Pityrogramma of ferns.

Related terms

• greenback

Anagrams

• black dog