interlocker noun2 •A device that interlocks.Signals and interlockers. — The Nickel Plate has 24 interlocking plants on its lines, of which 20 are mechanically operated and 4 electrically operated. — 1933 •A person who holds more than one role in a power structure.In 1995 the attention of the interlockers shifted away from their unresolved differences about sustainability to the consideration of specific policy options of particular interest to each. — 2000 formsinterlockers
