Live next to a field (4)
I believe the answer is:
area
'field' is the definition.
(I know that field can be written as area)
'live next to a' is the wordplay.
'live' becomes 'are' (I've seen this in another clue).
'next to' says to put letters next to each other.
'are'+'a'='AREA'
(Other definitions for area that I've seen before include "District; plot" , "Territory" , "Geographical region" , "land" , "field of study" .)