brana

1. dam
   Na Drini su izgradili veliku branu. — They built a big dam on the Drina.
   Brana je popustila posle obilnih kiša. — The dam gave way after heavy rains.
2. (figurative) barrier; bulwark
   Obrazovanje je najbolja brana protiv predrasuda. — Education is the best barrier against prejudice.
3. (in farming) harrow
   Deda je posle oranja prošao branom preko njive. — After plowing, grandpa went over the field with a harrow.

For "harrow", drljača is more common in Serbia.