early 15c., "leather pouch," from M.Fr. bougette, dim. of O.Fr. bouge "leather bag, wallet, pouch," from L. bulga "leather bag," of Gaulish origin (cf. O.Ir. bolg "bag," Bret. bolc'h "flax pod"), from PIE *bhelgh- (see
belly). Modern financial meaning (1733) is from notion