rachet Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction Example Sentence The man uses a rachet to fix the car. Spelled with a CH. Synonyms socket wrench; tool; cogwheel Antonyms bolt Hear It! Say It! Write It! rachet Switch to cursive Start Share with your friends: