Boring wrestling manoeuvre results in stalemate (8)
I believe the answer is:
deadlock
'stalemate' is the definition.
(synonyms)
'boring wrestling manoeuvre' is the wordplay.
'boring' becomes 'dead' (I've seen this in other clues).
'wrestling manoeuvre' becomes 'lock' (I am not sure about this - if you are sure you should believe this answer much more).
'dead'+'lock'='DEADLOCK'
'results in' acts as a link.
Can you help me to learn more?
(Other definitions for deadlock that I've seen before include "tie" , "Intractable problem" , "Situation from which no progress can be made" , "Impasse, standoff" , "Log jam" .)