A rail or track which directs the movement or positioning of something.
the bolt assembly slides on two steel guide rails
Example sentencesExamples
A guide rail is placed around the top of the concrete wall panels, not as a safety rail but to help tractor drivers know where the edge of the wall is.
Elisha Otis demonstrated a safety lift (essentially a moving clamp on guide rails) in New York in 1853.
A runner is guided by and moves along the guide rail.
The backside of the fixture has a series of slots into which the fixture components (clamps, guide rails, supports) are fitted.
The bottom-right bolt lug is slotted to engage a guide rail in the receiver while the bolt is being moved back or forward.
I always said they would come in handy for something, and they were perfect for guide rails down to the new kitchen.
In each of the four corners there was a precision metal tube that looked like some kind of guide rail.
Note the upward-pointing 'teeth' within the guide rails.
Picnic tables are built with supports and ramps to the entrance, and guide rails are provided all round.
All climbers on the bridge are attached to a guide rail by a running latch—the sort used by solo yachtsmen to ensure that they do not fall overboard.