spreader bar noun3 •A rod with cuffs or rope on both ends that is used to hold a person's arms or legs a fixed distance apart. •A tackle component consisting of a rod with attachments on both ends that is used to hold a rig's baits a fixed distance apart. •A horizontal bar or frame attached to two or more points on a load, enabling the load to be lifted, especially by crane, with greater stability and more even spread of forces. formsspreader bars