INTERLOCK

I. Date: 1632 intransitive verb to become locked together or interconnected, transitive verb to lock together ; unite , to connect so that the motion or operation of any part is constrained by another, II. noun Date: 1874 the quality, state, sense, or an instance of being ~ed, an arrangement in which the operation of one part or mechanism automatically brings about or prevents the operation of another , 3. a stretchable fabric made on a circular knitting machine and consisting of two ribbed fabrics joined by ~ing, a garment made of ~