šurak

1. brother-in-law
   Šurak mi pomaže oko renoviranja stana. — My brother-in-law is helping me renovate the flat.
   Za slavu dolaze tast, tašta i šurak. — My father-in-law, mother-in-law and brother-in-law are coming for the slava.

Šurak is only the wife's brother; the husband's brother is dever, the sister's husband is zet.