počinak

From po- + Proto-Slavic *čiti, *činǫti. Cognate with Bulgarian почивка (počivka, “rest”).

pòčinak m (Cyrillic spelling по̀чинак)

1. rest, the state of resting
   • 1890, Nikola Tordinac, Odabrane crtice i pripoviesti, Matica hrvatska, Zagreb, page 119:

     Bilo noći, bilo danju, ili pri poslu ili na počinku, vaviek ga iste muke mučile, a te muke bio stari kožuh.

     Either at night or by day, at work or at rest, he was always troubled by the same worries, and that worries were the old sheepskin.

2. sleep, the rest of sleeping

   poći na počinak ― to go to bed, to sleep