Interlock
Interlock , intransitive verb
To unite, embrace, communicate with, or flow into, one another; to be connected in one system; to lock into one another; to interlace firmly.
Interlock , transitive verb
1.
To unite by locking or linking together; to secure in place by mutual fastening.
My lady with her fingers interlocked.
2.
To connect together so that the parts work together as a coordinated unit; to connect as a single system.