Look through some prose, archaic (6)

I believe the answer is:

'look through' is the definition.
(thesaurus)

'some prose archaic' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'SEARCH' is hidden in the letters of 'prose archaic'.

(Other definitions for search that I've seen before include "Examine closely" , "Go through" , "Forage, quest" , "Try to locate" , "Scour, seek" .)

I've seen this clue in The Times.

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