Term: Piastre (Fr.)
Definition: Expression used by French speaking Americans and Canadians to designate a dollar. Still much in use in popular French in Québec today. From the italian, Piastra.
[Source: DIONNE, Narcisse-Eutrope, Le Parler Populaire des Canadiens-Français, Les Presses de l'Université Laval, 1974. For the etymology, Le Petit Robert, Dictionnaire de la Langue Française, edition of 1989.]