Script I better check (8)
I believe the answer is:
handicap
'check' is the definition.
(thesaurus)
'script i better' is the wordplay.
'script' becomes 'hand' ('hand' can be a synonym of 'script').
'better' becomes 'cap' (I've seen this before).
'hand'+'i'+'cap'='HANDICAP'
(Other definitions for handicap that I've seen before include "Disadvantage imposed on competitor to equalise chances" , "Physical or mental disability, sometimes imposed" , "Place at a disadvantage" , "Obstacle" , "Block" .)