hurricanes Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a cyclone formed in the tropics with winds of 74 miles per hour or greater that is usually accompanied by rain and thunder and lightning Example Sentence Hurricanes can cause flooding. Synonyms cyclone; whirlwind; typhoon Antonyms calm weather Hear It! Say It! Write It! hurricanes Switch to cursive Start Share with your friends: