Fluff - initially fluff - next to a lighter bit (5)

I believe the answer is:

flint

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'lighter bit' is the definition.
'flint' can be an answer for 'lighter' (thesaurus). I am not certain of the 'bit' bit.

'fluff initially fluff next' is the wordplay.
'initially' says to take the initial letters.
'fluff next' becomes 'lint' (I've seen this in another clue. I am not sure about the 'next' bit.).
The first letter of 'fluff' is 'f'.
'f'+'lint'='FLINT'

'to a' acts as a link.

Can you help me to learn more?

(Other definitions for flint that I've seen before include "It is used to produce sparks" , "Hard grey rock" , "It may spark something off!" , "castle in Wales" , "Sparky mineral" .)

I've seen this clue in The Daily Express.

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