monoliths Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a very large block of stone; large monument; great size Example Sentence The large granite monoliths were monuments to their leader. Synonyms rock; stone; large monument Antonyms giant; Titan; pebble Hear It! Say It! Write It! monoliths Switch to cursive Start Share with your friends: