molars Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a large tooth located in the back of the mouth with a broad biting surface used for grinding food. Example Sentence Her molars are coming in. Synonyms grinder; large tooth; toot for grinding food Antonyms tongue Hear It! Say It! Write It! molars Switch to cursive Start Share with your friends: