Meaning of the word greenback in English

What does greenback mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

greenback

US /ˈɡriːn.bæk/
UK /ˈɡriːn.bæk/

Noun

a US dollar bill, especially one issued during the Civil War

Example:
He pulled a wad of greenbacks from his pocket.
The old man still preferred to deal in cash, mostly greenbacks.