Guide'-bärs, n. pl.

nounplural

n. pl. (Mach.) The parts of a steam-engine on which the cross-head slides, and by which it is kept parallel to the cylinder, being a substitute for the parallel-motion;—called also guides, guide-blocks, slide-rods, and slides.

An engraving of a long mechanical guide-bar assembly with horizontal bars held between supports. — Guide-bars.