malter

1. (on a wall) plaster
   Malter je počeo da otpada sa plafona. — The plaster started falling off the ceiling.
   Zid je još pod malterom, treba ga okrečiti. — The wall is only plastered so far; it needs painting.
2. (in building) mortar
   Majstor meša malter za zidanje. — The builder is mixing mortar for the brickwork.

The verb "to plaster" is malterisati.