coolerbox Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. an insulated boxlike container that can be filled with ice and used to cool beverages and preserve food Example Sentence We filled the coolerbox with drinks to keep them cold. Spelled as one word. Synonyms ice chest; cooler; cold-storage box Antonyms heater Hear It! Say It! Write It! coolerbox Switch to cursive Start Share with your friends: