Small house or shelter (3)
I believe the answer is:
hut
I believe this is a double definition.
'small house' is the first definition.
(I've seen this before)
'shelter' is the second definition.
(hut is a kind of shelter)
'or' is the link.
(Other definitions for hut that I've seen before include "Small crudely-built shelter" , "Small shelter as for watchman" , "Peter Nissen's ubiquitous structure" , "Small crude shelter" , "Simple house or shelter" .)