omotnica

1. Croat. envelope
   Stavi pismo u omotnicu i zalijepi je. — Put the letter in the envelope and seal it.
   Dao mi je novac u omotnici. — He gave me the money in an envelope.
2. Croat. wrapper; jacket
   Knjiga ima šarenu omotnicu. — The book has a colourful jacket.

In Serbia an envelope is koverat or koverta, a wrapper is omot.