vesta

1. Croat. cardigan; knitted jacket
   Ponesi vestu, uveče zahladi. — Take a cardigan, it gets cool in the evening.
   Baka mi je isplela vunenu vestu. — Grandma knitted me a wool cardigan.

The word is understood but sounds Croatian. In Serbia: džemper, and for a knitted one with buttons kardigan; a waistcoat is prsluk.