megaliths Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. large stones used in ancient cultures as monuments or for religious purposes. Example Sentence The ancient site was filled with mysterious megaliths. Synonyms monoliths; standing stones; stone circles Antonyms pebbles; small stones Hear It! Say It! Write It! megaliths Switch to cursive Start Share with your friends: