Koschak Family History
Koschak Surname Meaning
Germanized form of Slovenian and Croatian Košak (see Kosak). Americanized form of Slovenian Koščak a variant of Košak (see Kosak) the name related to Croatian name in 3 below.
Americanized form of Croatian Košćak or Koščak: nickname from dialect košćak (from kost ‘bone’) ‘bony man’. Germanized form of Polish Koszak: nickname or occupational name from Old Polish kosz ‘braided basket’ or ‘kind of fishing net’.
Compare Koshak.
Source: Dictionary of American Family Names 2nd edition, 2022
