What does cavern mean?
A cavern is a large natural underground chamber — typically bigger and grander than what the ordinary word 'cave' suggests — formed over long ages by water dissolving rock such as limestone. The term also extends figuratively to describe any immense, echoing interior space, from an abandoned warehouse to a cathedral nave, evoking vastness, dimness, and sometimes awe or emptiness. Writers reach for 'cavern' precisely because of this sense of scale: stalactite-hung chambers explored by spelunkers, or a hangar so huge that voices vanish into its depths. The word derives from the Latin 'cavus,' meaning hollow, the same root that produced 'cave,' 'cavity,' and 'excavate.' Its adjective derivative, 'cavernous,' is widely used to describe anything deep-hollowed or seemingly bottomless — a cavernous yawn, a cavernous hall. Whether describing geology or architecture, 'cavern' reliably conveys immensity carved out of enclosure.
nounA large, deep cave, or a spacious chamber within a cave; more broadly, any vast, cavernous enclosed space resembling one.
- A large cave or a big chamber within a cave.
- A very large room or enclosed space, especially one suggesting the scale or gloom of a cave (figurative or extended use, as in 'a cavern of a warehouse').
"Stalactites hung from the ceiling of the vast limestone cavern."
"The explorers' headlamps barely reached the far wall of the enormous cavern."
"The empty stadium felt like a great concrete cavern, silent after the crowd had gone."
The standard plural; frequently used in names of tourist and geological sites, e.g. 'Luray Caverns.'
"Carlsbad Caverns attracts hundreds of thousands of visitors each year."
The same Latin root that gives us 'cavern' gives us 'cave,' 'cavity,' and 'excavate' — every hole dug by humans and nature traces back to one Latin word for 'hollow.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cavern
Cavern comes from the Latin 'cavus,' meaning hollow, via forms such as Latin 'caverna,' a hollow place or cave. It entered English through Old French in the late Middle Ages, with established use attested by the early modern period. The same Latin root underlies related English words such as 'cave,' 'cavity,' 'concave,' and 'excavate,' all built on the idea of a hollowed-out space.
Related word forms
How cavern is actually used
Cavern implies size and often darkness or grandeur beyond an ordinary cave; it is slightly literary in tone when used figuratively. In geology and speleology it denotes a substantial cave system or chamber rather than a small hollow.