English Reference

Word

cavern

Phoneticscav·ern

US/ˈkævɝn/

UK/kˈævən/

Definition

n. a very large cave, often found deep underground. It feels much bigger and more impressive than a normal cave.

n. a large cave or a chamber in a cave, typically formed by the underground erosion of rock. Often implies a sense of vastness or depth compared to a standard cave.

Examples

“The hikers explored the dark cavern with their flashlights.”

“Water dripping from the ceiling of the cavern has created massive limestone pillars over thousands of years.”

“As the explorers descended deeper into the limestone system, they emerged into a vast cavern where the echoes of their voices seemed to travel for miles.”

Examples

simple

“The hikers explored the dark cavern with their flashlights.”

contextual

“Water dripping from the ceiling of the cavern has created massive limestone pillars over thousands of years.”

complex

“As the explorers descended deeper into the limestone system, they emerged into a vast cavern where the echoes of their voices seemed to travel for miles.”

Usage

Often used metaphorically to describe any large, dark, or hollow space.

Real-World Examples

“Freshly excavated caverns 100m underground sit next to stores that have been used for sparkling wine, apples and cheese in recent years.”
BBC News · 18 Aug 2026

Etymology

From Middle English caverne, borrowing from Old French caverne, from Latin caverna (“hollow, cavity, cave”), from cavus (“hollow, excavated, concave”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

cavernNouncavernousAdjective

This entry

Level
B2 · Upper Intermediate
Frequency
Occasional
Updated

Scan code

englishreference.com/q/cavern

English Reference