a wheeled vehicle adapted to the rails of railroad

a short stretch of railroad track used to store rolling stock or enable trains on the same line to pass

A fundamental unit of length in both the US Customary System and the British Imperial System, equal to 3 feet, or 36 inches (0.9144 meter), A tract of ground next to, surrounding, or surrounded by a building or buildings, An area where railroad trains are made up and cars are switched, stored, and serviced on tracks and sidings, intransitive verb_ To enclose, collect, or put into a yard, To gather together into a yard, transitive verb_ To confine (cattle) to the yard; to shut up, or keep, in a yard

An underground or underwater passage, An artificial passage or archway for conducting canals, roads, or railroads under elevated ground, for the formation of roads under rivers or canals, and the construction of sewers, drains, and the like, a net with a wide mouth at one end and narrow at the other, verb_ move through by or as by digging, force a way through, transitive verb_ To make an opening, or a passageway, through or under, To form into a tunnel, or funnel, or to form like a tunnel, To catch in a tunnel net, intransitive verb_ To make a tunnel through or under, To produce, shape, or dig in the form of a tunnel, To make a tunnel