Drawn relative after midnight (5)
I believe the answer is:
gaunt
'drawn' is the definition.
(I've seen this before)
'relative after midnight' is the wordplay.
'relative' becomes 'aunt' (aunt is a type of relative).
'after' means one lot of letters go next to another.
'midnight' becomes 'g' (the middle letter in 'night').
'aunt' put after 'g' is 'GAUNT'.
(Other definitions for gaunt that I've seen before include "Very slight" , "place associated with Edward III's son" , "forlorn" , "Lean and haggard" , "Wasted" .)