Dismissed article in meadow that’s turned shabby (3,2,4)
I believe the answer is:
out at heel
'shabby' is the definition.
(I've seen this before)
'dismissed article in meadow that's turned' is the wordplay.
'dismissed' becomes 'out' (I've seen this before).
'article' becomes 'the' (the definite article in English).
'in' means one lot of letters goes inside another.
'meadow' becomes 'lea' (I've seen this before).
'that's turned' shows that the letters should be reversed in order.
'lea' in reverse letter order is 'ael'.
'the' placed into 'ael' is 'atheel'.
'out'+'atheel'='OUT AT HEEL'
(Other definitions for out at heel that I've seen before include "Looking the worse for wear" , "Shabby" , "Well-worn" .)