Rail 2 : A rolled steel shape designed to be laid end to end in two parallel lines on ties to form a track for rail cars, traveling cranes, and similar vehicles
Ilan Kelman (ed.), Vulnerability and Resilience Definitions and References, Version 2, 2007. http://www.islandvulnerability.org/docs/vulnres.pd f, (Vulnr and Resilience - Brit) {524}