This is the 10154th most frequent Polish word.
bokach
"Bokach" in Polish means "sides" (locative plural form of "bok").
In this case, 'bokach' refers to the edges or margins alongside the road, denoting bordering areas.
Po bokach drogi rosły kolorowe kwiaty.
Colorful flowers grew on the sides of the road.
Here, 'bokach' refers to the sides (or margins) of a sheet or page, indicating peripheral areas of a rectangular object.
Na bokach kartki zapisałem ważne notatki.
I wrote important notes on the sides of the page.
Here, 'bokach' refers to the sides of a house, indicating physical sides or parts of a structure.