bristles Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. short stiff hair or fiber. they are often found on animals or brushes. Example Sentence My hair brush is made of nylon bristles. More Example Sentences He felt the bristles on the animal. Synonyms stiff hair; spikes; fibers Antonyms be delighted; pleased Hear It! Say It! Write It! bristles Switch to cursive Start Share with your friends: