Tower encountered round parts of Iran (7)
I believe the answer is:
minaret
'tower' is the definition.
(I know that minaret is a type of tower)
'encountered round parts of iran' is the wordplay.
'encountered' becomes 'met' ('meet' can be a synonym of 'encounter').
'round' indicates putting letters inside.
'parts of' is an anagram indicator.
'iran' is an anagram of 'inar'.
'met' enclosing 'inar' is 'MINARET'.
(Other definitions for minaret that I've seen before include "tower in Istanbul, say" , "Building" , "Mosque's tower" , "Tower attached to mosque" , "Raiment worn on mosque tower" .)