cavern

As a noun cavern

is a large cave.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between cavern and cenote

is that cavern is a large cave while cenote is cenote.

As a noun cavern

is a large cave.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between cavern and burrow

is that cavern is a large cave while burrow is a tunnel or hole, often as dug by a small creature.

As a verb burrow is

to dig a tunnel or hole.

As nouns the difference between chasm and cavern

is that chasm is a deep, steep-sided rift, gap or fissure; a gorge or abyss while cavern is a large cave.

Ditch is a related term of cavern.

As nouns the difference between ditch and cavern

is that ditch is or ditch can be a trench; a long, shallow indentation, as for irrigation or drainage while cavern is a large cave.

As a verb ditch

is or ditch can be to discard or abandon.

Sink is a related term of cavern.

As nouns the difference between sink and cavern

is that sink is a basin used for holding water for washing while cavern is a large cave.

As a verb sink

is to move or be moved into something .

Void is a related term of cavern.

As nouns the difference between void and cavern

is that void is an empty space; a vacuum or void can be while cavern is a large cave.

As an adjective void

is containing nothing; empty; vacant; not occupied; not filled.

As a verb void

is (label) to make invalid or worthless.

As nouns the difference between depression and cavern

is that depression is an area that is lower in topography than its surroundings while cavern is a large cave.