interlock

nouns

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

verbs

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