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This tool relates English terms to concepts from the SUMO ontology by means of mappings to WordNet synsets.


English Word: 
According to WordNet, the noun "underground" has 2 sense(s).

108360672 a secret group organized to overthrow a government or occupation force.

103757138 an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'".


Explore the word underground on the WordNet web site.

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