House of retired US soldier -- look round (5)
I believe the answer is:
igloo
'house' is the definition.
(I've seen this before)
'retired us soldier look round' is the wordplay.
'retired' says the letters should be written backwards.
'us soldier' becomes 'gi' (I've seen this in other clues).
'look' becomes 'lo'.
'round' becomes 'o' (round can mean a round object).
'gi' back-to-front is 'ig'.
'ig'+'lo'+'o'='IGLOO'
'of' acts as a link.
(Other definitions for igloo that I've seen before include "From domed hut" , "Snow dwelling" , "Dome-shaped dwelling" , "packed house" , "Ice house for Eskimo" .)