/ ˈdedlɒk; NAmE -lɑːk/ noun
1.
[ sing. , U ] a complete failure to reach agreement or settle an argument
SYN stalemate :
European agriculture ministers failed to break the deadlock over farm subsidies.
( BrE )
The strike appeared to have reached deadlock.
( NAmE , BrE )
The strike has reached a deadlock.
2.
[ C ] ( BrE ) (also dead·bolt NAmE , BrE ) a type of lock on a door that needs a key to open or close it
► dead·locked adjective [ not before noun ]:
Despite months of discussion the negotiations remained deadlocked.