Family name origins & meanings
- Hungarian, Czech, and Slovak (Koša) : from a pet form of any of various personal names beginning with Ko-, e.g. Kornel (see Cornelius).
- Czech, Polish, and Sorbian : from kosa ‘scythe’, a metonymic occupational name for a maker of scythes or a metonymic occupational name for a reaper.
- Czech, Polish, and Sorbian : variant of Kos.