Cavern underground Synonyms

We can't find synonyms for the phrase "Cavern underground", but we have synonyms for terms, you can combine them.

Cavern Synonyms

underground chamber

CU abbreviation

CU is an abbreviation for Cavern Underground

What does CU stand for?

CU stands for "Cavern Underground"

Definitions for Cavern

(noun) a large cave or a large chamber in a cave
(noun) any large dark enclosed space
(verb) hollow out as if making a cavern

Definitions for Underground

(adjective) undertaken or done so as to escape being observed or known by others
(adjective) being, situated, or operating beneath the surface of the earth
(noun) a secret organization in a conquered country fighting against enemy forces