interlock in WordNet English dictionary

1. a device that prevents an automotive engine from starting
   "car theives know how to bypass the ignition interlock"
   interlock  ignition interlock 
   
2. the act of interlocking or meshing
   "an interlocking of arms by the police held the crowd in check"
   mesh  meshing  interlock  interlocking 
   

1. hold in a locking position
   "He locked his hands around her neck"
   lock  interlock  interlace 
   
2. coordinate in such a way that all parts work together effectively
   interlock  mesh 
   
3. become engaged or intermeshed with one another
   "They were locked in embrace"
   interlock  lock