Definition of subterranean
- a subterranean network of criminals
a subterranean bunker that supposedly could withstand even an atomic blast
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'subterranean.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
A tunnel is a subterranean road or pathway, and a subway is a subterranean railway. The subterranean vaults at Fort Knox hold billions of dollars of gold reserves. Subterranean reservoirs called aquifers are tapped for water; in places where the pressure on the subterranean water is great enough, a hole drilled in the ground will bring it bubbling to the surface.
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