bonfires Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. large fires built outdoors; as for signaling or in celebration of an event Example Sentence The campers roasted marshmallows on the bonfires. Synonyms fire; outdoor fire; large fire Antonyms water Hear It! Say It! Write It! bonfires Switch to cursive Start Share with your friends: