Mizunomi Byakusho (water drinking peasant) refer to those who did not have their own harvesting lands, although they were in the census register, since the Edo period.
水呑百姓（みずのみびゃくしょう）は、江戸時代以降、在方の人別に加わりつつ、石高を所持しない無高の者を指す呼称。