variti

1. (of food) to digest
   Organizam sporo vari masnu hranu. — The body digests fatty food slowly.
   Posle operacije stomak mi slabo vari. — Since the operation my stomach hasn't been digesting well.
2. (of metal) to weld
   Otac u dvorištu vari novu ogradu. — Dad is welding a new fence in the yard.
3. colloq. (with negation) can't stand
   Iskreno, ne varim tog tipa. — Honestly, I can't stand that guy.

In the welding sense, technical language more often uses zavarivati.