Greenbacks
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The term greenback Is the popular and almost exclusive name applied to all United States treasury issues, and is not applied to any other species of paper currency. 23 Ind. 23. 6REEVE, GREF. (Law Fr.) Grievous; severe.
Ballentine's Law Dictionary
James A. Ballentine · 1916
United States paper currency. See 79 Ala. 259.