cavern Get Printable Handwriting (cav-ern) 2 syllables Rhymes Learn It! Spelling Test Definition noun. a large cave or a large chamber in a cave; any large dark enclosed spaceverb. hollow out as if making a cavern Example Sentence The roof of the cavern was covered with bats. Synonyms cave; cavity; den; grotto Antonyms bright open space Rhymes Two Syllable Rhymes (3) cavern davern tavern Share with your friends: