Prose composition (5)

I believe the answer is:

essay

'prose composition' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for essay that I've seen before include "Composition, paper, article" , "Attempt; written piece" , "Make an effort to write one" , "Scholarly work" , "Trial, piece of writing" .)

I've seen this clue in The Mirror and the Evening Standard.

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