In which a boxer keeps his press-cuttings (9)

I believe the answer is:

scrapbook

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'in which a boxer keeps his press-cuttings' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

This is all the clue.

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(Other definitions for scrapbook that I've seen before include "Blank volume for sticking in pictures or cuttings" , "Volume for cuttings, photographs etc." , "Album for clippings, notes etc." , "Album for bits and pieces" , "cutting destination?" .)

I've seen this clue in The Irish Independent.

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