Interpret former poet (7)

I believe the answer is:

expound

'interpret' is the definition.
(I've seen this before)

'former poet' is the wordplay.
'former' becomes 'ex' (prefix meaning former or onetime).
'poet' becomes 'pound' (I've seen this before).
'ex'+'pound'='EXPOUND'

(Other definitions for expound that I've seen before include "Set forth, explain in detail" , "Set out in a detailed and learned way" , "Elucidate" , "Explain meaning in detail" , "Put forward detailed argument" .)

I've seen this clue in The Times.

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