fiscal: [16] Latin fiscus originally denoted a ‘small rush basket’, used for example for keeping olives in. Evidently, though, the main purpose to which it was put was as a purse, for it soon acquired the figurative sense ‘public purse, public revenue’. Hence the adjective fiscālis ‘of the imperial treasury’, which passed into English via French fiscal. [fiscal etymology, fiscal origin, 英语词源]