uporište

1. (figurative) basis; grounds
   Ta odluka nema uporište u zakonu. — That decision has no basis in law.
2. (military, political) stronghold; bastion
   Ovaj grad je tradicionalno uporište opozicije. — This town is a traditional opposition stronghold.
3. (physical) support; foothold
   Penjač je tražio uporište za nogu. — The climber looked for a foothold.

Often in the phrase "imati uporište u" + locative.