For example? Rest outside, Lord! (5)
I believe the answer is:
liege
'lord' is the definition.
(feudal term for a superior)
'for example? rest outside' is the wordplay.
'for example?' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'rest' becomes 'lie' (lying is a kind of resting).
'outside' indicates putting letters inside.
'eg' put into 'lie' is 'LIEGE'.
(Other definitions for liege that I've seen before include "Feudal lord or Belgian city" , "Belgian city or ancient superior" , "Loyal subject" , "European province" , "Belgian city or feudal chief" .)