Flash publication held back including article from Paris (5)
I believe the answer is:
gleam
'flash' is the definition.
(I know that gleam is a type of flash)
'publication held back including article from paris' is the wordplay.
'publication' becomes 'mag' (abbreviation for magazine).
'held back' is a reversal indicator.
'including' means one lot of letters goes inside another.
'article from paris' becomes 'le' (definite article in French).
'mag' written backwards gives 'gam'.
'gam' going around 'le' is 'GLEAM'.
(Other definitions for gleam that I've seen before include "Brief show of soft light" , "Ray" , "Glint" , "Brightness" , "Coruscate" .)