porezati

1. to cut; to cut oneself
   Porezao sam se na nož dok sam kuvao. — I cut myself on a knife while cooking.
   Porezala je prst na staklo. — She cut her finger on the glass.
2. to cut up; to slice
   Porezala sam luk i paprike za ručak. — I cut up the onion and peppers for lunch.

For "to cut oneself" use se: porezati se na nož "to cut oneself on a knife".