US subject receives award for drama (7)
I believe the answer is:
macbeth
'drama' is the definition.
(play by Shakespeare)
'us subject receives award' is the wordplay.
'us subject' becomes 'math' (US name for mathematics).
'receives' means one lot of letters goes inside another (inserted letters are received).
'award' becomes 'CBE' (Commander of the Order of the British Empire award).
'math' enclosing 'cbe' is 'MACBETH'.
'for' acts as a link.
(Other definitions for macbeth that I've seen before include "He doth murder sleep (Shak.)" , "from 6 & 12 VERDI & SHAKESPEARE] ?" , "Thane of 6" , "Shakespearean play" , "Shakespears's Scottish play" .)