Definition of keylock:
(n) :
(music) A digital feature used by disc jockeys that locks a track to its original key regardless of changes made to the tempo.
(n) :
(combat sports) An armlock where the implementer isolates the opponent's arm and torques the shoulder in order to cause pain or injury.
(n) :
(computing, historical) A physical lock on the case of a computer, preventing use of the keyboard until unlocked.
(n) :
A surname.