“Discontented” kiddy breaking fragile window (8)

I believe the answer is:

skylight

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'window' is the definition.
(I know that skylight is a type of window)

'discontented kiddy breaking fragile' is the wordplay.
'discontented' suggests removing the centre (the word's contents are removed).
'breaking' indicates putting letters inside.
'fragile' becomes 'slight' (I am not sure about this - if you are sure you should believe this answer much more).
'kiddy' with its middle removed is 'ky'.
'ky' going inside 'slight' is 'SKYLIGHT'.

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(Other definitions for skylight that I've seen before include "Attic window" , "Window in a roof or ceiling" .)

I've seen this clue in The Times.

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