triplets Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. three children born at the same time. Example Sentence The triplets are four years old now. More Example Sentences They shared their toys with each other. Synonyms threefold; trio; set of three Antonyms only child Hear It! Say It! Write It! triplets Switch to cursive Start Share with your friends: