tiket

1. (in betting) betting slip
   Pukao mi je tiket zbog jedne utakmice. — My betting slip lost because of one match.
   Uplatio je tiket od petsto dinara. — He placed a five-hundred-dinar bet.
2. colloq. (in IT and support) ticket; support request
   Otvori tiket i IT služba će se javiti. — Open a ticket and IT will get back to you.

For a travel or cinema ticket Serbians usually say karta.