Pay park keeper initially accepted, bringing ruin (8)
I believe the answer is:
wreckage
'ruin' is the definition.
(I've seen this before)
'pay park keeper initially accepted' is the wordplay.
'pay' becomes 'wage' (synonyms).
'park' becomes 'rec' (short for recreation ground).
'initially' says to take the initial letters.
'accepted' indicates putting letters inside.
The initial letter of 'keeper' is 'k'.
'rec'+'k'='reck'
'wage' placed around 'reck' is 'WRECKAGE'.
'bringing' is the link.
(Other definitions for wreckage that I've seen before include "Broken bits and pieces" , "Ruined material" , "Flotsam" , "Sign of misfortune at sea" , "Ruin" .)