Remain uneasy close to shot tower (7)
I believe the answer is:
minaret
'tower' is the definition.
(minaret is a kind of tower)
'remain uneasy close to shot' is the wordplay.
'uneasy' indicates an anagram.
'close to' suggests the final letters (the close/ending of).
The final letter of 'shot' is 't'.
'remain' with letters rearranged gives 'minare'.
'minare'+'t'='MINARET'
(Other definitions for minaret that I've seen before include "Mosque's tower" , "Raiment worn on mosque tower" , "Appropriate raiment for mosque tower" , "tower in Istanbul, say" , "Mosque spire" .)