a cheap, sensational novel bound in yellow fabric or paper
2.
a U.S. dollar having a yellow coloured back
3.
a lemon coloured fish
yellowback in American English
(ˈjelouˌbæk)
noun
1. (formerly)
an inexpensive, often lurid, novel bound in yellow cloth or paper
2.
a gold certificate
Word origin
[1790–1800; yellow + back1]This word is first recorded in the period 1790–1800. Other words that entered Englishat around the same time include: backhanded, cannibalism, gelatin, infiltration, standby