Poet takes orders (5)
I believe the answer is:
keats
'poet' is the definition.
(John Keats)
'takes orders' is the wordplay.
'orders' is an anagram indicator.
'takes' is an anagram of 'KEATS'.
(Other definitions for keats that I've seen before include "English romantic poet, d. 1821" , "Endymion, Lamia poet" , "English poet, d. 1821 in Rome of TB" , "To a Nightingale poet" , "John - - (19)" .)