caverns Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. large underground chambers or caves. Example Sentence We found bats hanging in the dark caverns. More Example Sentences We explored the caverns during our trip. Synonyms caves; hollows; grottoes Antonyms bright open space Hear It! Say It! Write It! caverns Switch to cursive Start Share with your friends: