Poet, six, extraordinary girl (6)

I believe the answer is:

virgil

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

'six extraordinary girl' is the wordplay.
'six' becomes 'VI' (Roman numerals).
'extraordinary' indicates anagramming the letters.
'girl' anagrammed gives 'rgil'.
'vi'+'rgil'='VIRGIL'

(Other definitions for virgil that I've seen before include "old poet" , "Latin poet" , "Roman poet who wrote the Aeneid" , "Author of the Aeneid, d. 19 BC" .)

I've seen this clue in The Times.

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