stupa

1. mortar; stamp mill
   Baka je nekad tukla žito u drvenoj stupi. — Grandma used to pound grain in a wooden mortar.
2. (of cloth) fulling mill
   Na reci su nekada radile vodenice i stupe. — There used to be watermills and fulling mills on the river.
3. (in Buddhism) Buddhist stupa
   U Nepalu smo obišli čuvenu budističku stupu. — In Nepal we visited the famous Buddhist stupa.

For a kitchen mortar, modern speakers usually say avan.