Any form of track along which things can slide(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "slideway" in a sentence
"As the pickup began to move along the slideway with her, the man on the right closed a switch, placed his hand on a plunger."
"Psi blocks were all about, sensed as a gradually shifting pattern of barriers to probes as the slideway moved on with her."
"She stepped off the slideway as it came up to the window fronts, walked over, started along the gleaming windows, then stopped, looking in at the displayed merchandise."