Bishop with final curse (5)
I believe the answer is:
blast
'curse' is the definition.
(thesaurus)
'bishop with final' is the wordplay.
'bishop' becomes 'b' (abbreviation used in chess).
'with' says to put letters next to each other.
'final' becomes 'last' (synonyms).
'b'+'last'='BLAST'
(Other definitions for blast that I've seen before include "Shoot" , "Great time: explosion" , "Damn - explosion" , "Noise of explosion" , "Effect of explosion" .)