namazati

1. (of food) to spread; to butter
   Namazala sam hleb puterom i medom. — I spread butter and honey on the bread.
   Namaži mi jedno parče hleba paštetom, molim te. — Spread some pâté on a slice of bread for me, please.
2. (of skin, often namazati se) to put on; to apply
   Namaži se kremom za sunčanje pre plaže. — Put on some sunscreen before the beach.
   Namazala je usne crvenim karminom. — She put red lipstick on her lips.
3. (of objects) to grease; to oil; to coat
   Namazao je šarke uljem i vrata više ne škripe. — He oiled the hinges and the door doesn't creak anymore.
   Namaži pleh mašću pre nego što sipaš testo. — Grease the baking tray before you pour in the batter.

Two patterns: namazati hleb puterom (thing + instrumental) or namazati puter na hleb (substance + na).