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1Track (rail transport) — Permanent way redirects here. For other uses, see Permanent way (disambiguation). Twin rail tracks in a wooded area …
2Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …
3Velcro — hooks Velcro loops Velcro is the brand name of the first commercially marketed fabric hook and loop fastener …
4Nylon — For other uses, see Nylon (disambiguation). Nylon Density 1.15 g/cm3 Electrical conductivity (σ) 10 …
5railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
