repa

1. turnip
   Baka je u supu stavila i malo repe. — Grandma also put a bit of turnip in the soup.
2. (šećerna, stočna repa) beet
   U Vojvodini se mnogo gaji šećerna repa. — A lot of sugar beet is grown in Vojvodina.

Red beetroot is usually called «cvekla» in Serbian; don't confuse «repa» with the genitive of «rep» (tail).