Criminal court locking up bishop over street stall (8)
I believe the answer is:
obstruct
'stall' is the definition.
(thesaurus)
'criminal court locking up bishop over street' is the wordplay.
'criminal' is an anagram indicator.
'locking up' indicates putting letters inside (I've seen this in other clues).
'bishop' becomes 'B' (chess abbreviation).
'over' indicates putting letters inside.
'street' becomes 'st' (abbreviation).
'court' is an anagram of 'oruct'.
'oruct' going around 'b' is 'obruct'.
'obruct' enclosing 'st' is 'OBSTRUCT'.
(Other definitions for obstruct that I've seen before include "Prevent or hinder movement" , "Get in the way of" , "Block the passage or shut out the view" , "Stymie" , "Hamper" .)