The state a hut may be in (4)
I believe the answer is:
utah
'the state' is the definition.
(Utah is a US state)
'a hut may be in' is the wordplay.
'may be' is an anagram indicator.
'in' means one lot of letters goes inside another.
'hut' is an anagram of 'uth'.
'a' placed inside 'uth' is 'UTAH'.
(Other definitions for utah that I've seen before include "State founded by Mormon" , "American state, capital Salt Lake City" , "America's Mormon state" , "member of union" , "State of western US" .)