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WordNet-Online
Definitions from WordNet
Noun underground railway has 1 sense
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Definitions from the WebUnderground RailwayDefinition:The term "underground railway" refers to a system of trains that operates underground, usually in urban areas, providing a means of transportation for passengers. Senses:NounSense 1:A transportation system that consists of underground trains. Example sentence: The underground railway in London is known as the "Tube." Sense 2:A secret or covert network that assists people, especially slaves, in escaping to freedom. Example sentence: Harriet Tubman played a significant role in the operation of the Underground Railway during the mid-19th century. Related Products: | ||||
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