ˈgrēnˌbakə(r) noun
Etymology: greenback (money) + -er
1. usually capitalized : a member of a post-Civil War American political party opposing any reduction in the amount of paper money in circulation
2. : one who advocates a paper currency backed only by the United States government
the silverites, the greenbackers, the price stabilizers, and others … are pledged to a central-bank scheme — Harper's