of

أَدَاة إضافَة \ of: (after a noun) showing position or relationship: the top of the hill; the captain of the team, (used after a noun) forming a verbal phrase: What was the cause of it? (What caused it?). \ أَدَاة إضافَة دالّة على المِلْكِية \ of: (after a noun) showing possession: He’s a friend of theirs (He’s their friend). That car of Peter’s is very fast (That car which belongs to Peter...).