puhnuti

1. Croat. to blow; to give a puff
   Puhni malo, jako je vruće! — Blow on it a bit, it's really hot!
   Odjednom je jako puhnulo i vrata su se zatvorila. — Suddenly there was a strong gust and the door slammed shut.
2. Croat. (of candles, a flame) to blow out
   Zamisli želju i puhni! — Make a wish and blow out the candles!

In Serbia the word is dunuti (imperfective duvati).