Big look around construction (5)
I believe the answer is:
igloo
'construction' is the definition.
(igloo is a kind of construction)
'big look around' is the wordplay.
'around' says the answer is hidden in the clue.
'IGLOO' is hidden within 'big look'.
(Other definitions for igloo that I've seen before include "Inuit shelter" , "Home made of blocks of snow" , "Arctic dwelling" , "Dome-shaped dwelling" , "Stacked blocks" .)