[{"Bold_text": "verb (used without object)", "List Items": ["to fit into each other, as parts of machinery, so that all action is synchronized.", "to interweave or interlace, one with another:The branches of the trees interlock to form a natural archway.", "Railroads.(of switches, signals, etc.) to operate together in a prearranged order."]}, {"Bold_text": "verb (used with object)", "List Items": ["to lock with another.", "to fit (parts) together to ensure coordinated action.", "Railroads.to arrange (switches, signals, etc.) to effect a predetermined sequence of movement."]}, {"Bold_text": "noun", "List Items": ["the fact or condition of interlocking or of being interlocked.", "the existence or an instance of an interlocking directorate interlocking directorate.", "a device for preventing a mechanism from being set in motion when another mechanism is in such a position that the two operating simultaneously might produce undesirable results.", "Also calledig·ni·tion in·ter·lock[ig-, nish, -, uh, n , in, -ter-lok].a device or system that prevents an automotive engine from starting until the seat belt for any occupied front seat is fastened.", "a stretch fabric made with a circular knitting machine having two alternating sets of long and short needles.", "Movies.a device for synchronizing the action of a camera and sound recorder."]}]