kreč

1. lime
   Majstor meša pesak, kreč i vodu. — The builder is mixing sand, lime and water.
   Gašeni kreč se drži dalje od dece. — Slaked lime is kept away from children.
2. whitewash
   Zidovi mirišu na svež kreč. — The walls smell of fresh whitewash.
   Kreč je počeo da se ljušti sa plafona. — The whitewash started peeling off the ceiling.

The verb 'to whitewash' is krečiti; the Croatian equivalent of the noun is vapno.