Found in residence by the border (4)
I believe the answer is:
side
'the border' is the definition.
(thesaurus)
'found in residence by' is the wordplay.
'found in' says the answer is hidden in the clue.
'SIDE' is hidden within 'residence by'.
(Other definitions for side that I've seen before include "party" , "Bank" , "by no means a front" , "Particular aspect" , "This effect is secondary" .)