interlock

definition: coordinate in such a way that all parts work together effectively
example:
speech part: verb
synonyms: mesh
definition: become engaged or intermeshed with one another
example:
speech part: verb
synonyms: lock
definition: hold in a locking position
example:
speech part: verb
synonyms: lock interlace
definition: the act of interlocking or meshing
example: an interlocking of arms by the police held the crowd in check
speech part: noun
synonyms: mesh
definition: a device that prevents an automotive engine from starting
example: car theives know how to bypass the ignition interlock
speech part: noun
synonyms: ignition interlock

How interlock is being used?