What is the meaning of Underground Railroad?

noun

  • Secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). underground railroad. Retrieved September 20, 2026, from http://smartdefine.org/underground_railroad/definitions/1188810
ChicagoWordNet. 2010. "underground railroad" http://smartdefine.org/underground_railroad/definitions/1188810 (accessed September 20, 2026).
HarvardWordNet 2010, underground railroad, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/underground_railroad/definitions/1188810>.
MLAWordNet. "underground railroad" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/underground_railroad/definitions/1188810>