An Etymological Dictionary of the German Language/Annotated/Kummet
Kummet, neuter, ‘horse-collar,’ from the equivalent Middle High German komat, neuter; borrowed in the Middle High German period from Slavonic (compare Old Slovenian chomątŭ, Polish chomąt); hence not diffused beyond the High German group. The Slavonic cognates of Old Slovenian chomątu are derived from Old Teutonic; compare Middle English and Modern English hame, Dutch haam, Westphalian ham, Rhine Provençal hamen, hammen, ‘horse-collar.’