Deadlock
Pronunciation : Dead"lock`
Part of Speech : n.
Definition : 1. A lock which is not self-latching, but requires a key to throw the bolt forward.
2. A counteraction of things, which produces an entire stoppage; a complete obstruction of action. Things are at a deadlock. London Times. The Board is much more likely to be at a deadlock of two to two. The Century.
Source : Webster's Unabridged Dictionary, 1913