Kalach (food)
Kalach (Ukrainian: кaлач; Russian: кала́ч), also known in Ukrainian as kolach), is a traditional East Slavic bread, commonly served during various ritual meals. The name originates from the Old Slavonic word kolo (коло) meaning "circle", "wheel".
A man who made kalaches was called a калачник (kalachnik), which sometimes by sandhi effect became калашник, and sometimes such a man's descendants thus got the surname Калачник (Kalachnik) or Калашник (Kalashnik), or in Russian Калашников (Kalashnikov) (= " of the kalach-maker").
Read more about Kalach (food): Ukrainian Tradition, Russian Tradition