whistles Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a shrill clear sound made by forcing air through puckered lips; a device making a shrill sound;verb. to make a clear and shrill cry Example Sentence Mary whistles a song. Synonyms toot; trill; shrill sound Antonyms talk Hear It! Say It! Write It! whistles Switch to cursive Start Share with your friends: