rastaviti

1. to disassemble; to take apart; to dismantle
   Rastavio je sat da vidi šta ne radi. — He took the watch apart to see what was wrong.
   Rastavi reč na slogove. — Split the word into syllables.
2. (of people) to separate; to part
   Rat je rastavio mnoge porodice. — The war separated many families.
3. (rastaviti se od + gen.) to divorce; to split up
   Rastavili su se posle deset godina braka. — They divorced after ten years of marriage.
   Rastavila se od muža prošle godine. — She divorced her husband last year.

In the sense "to divorce" it is rastaviti se od koga, synonymous with razvesti se.