a group of people living in the same area and forming a culture with a common language, customs, economy, etc., usually endogamous.
Origin: before 900; Middle English; Old English cȳth, earlier cȳththu kinship, knowledge, equivalent to cūthcouth2 + -thu-th1; akin to Gothic kunthi,German Kunde knowledge
O.E. cyðð "native country, home," from cuð "known," pp. of cunnan "to know" (see can (v.)). The alliterative phrase kith and kin (late 14c.) originally meant "country and kinsmen."