Interlock /(?)/

In·ter·lock

Interlock

v. i.
  1. 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

v. t.
  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.