greenback
greenback, n. Slang. A legal-tender note of the United States; any note issued by a federal reserve bank. • The term was coined in 1862 when the backs of American paper currency were first printed in green ink.
greenback, n. Slang. A legal-tender note of the United States; any note issued by a federal reserve bank. • The term was coined in 1862 when the backs of American paper currency were first printed in green ink.