noun
Etymology: rail (II)
: a device to help maintain the proper line and gage of track by resisting the longitudinal movement of rails under traffic and maintaining proper expansion allowance at joint gaps for temperature changes
noun
Etymology: rail (II)
: a device to help maintain the proper line and gage of track by resisting the longitudinal movement of rails under traffic and maintaining proper expansion allowance at joint gaps for temperature changes
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012