cirrus clouds Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. thin wispy clouds found high in the sky. Example Sentence The cirrus clouds looked like feathers in the sky. More Example Sentences They often signal a change in weather. Synonyms wispy clouds; high clouds; feather clouds Antonyms thick; dense Hear It! Say It! Write It! cirrus clouds Switch to cursive Start Share with your friends: