Definition: [verb] (of two or more things) engage with each other by overlapping or by the fitting together of projections and recesses.
Example: their fingers interlocked
Definition: [noun] a device or mechanism for connecting or coordinating the function of different components.
Example: a safety interlock to stop the blades spinning
Definition: [noun] a fabric knitted with closely interlocking stitches allowing it to stretch.
Example: a dress in soft interlock