Move gradually from Flintwinches (4)
I believe the answer is:
inch
'move gradually' is the definition.
(I've seen this before)
'from flintwinches' is the wordplay.
'from' indicates the answer is hidden within the clue.
'INCH' is hidden within 'flintwinches'.
(Other definitions for inch that I've seen before include "1/12 of foot" , "Irish island" , "0.08333 of a foot" , "Twenty five point four millimetres" , "Move by slow degrees" .)