roo Get Printable Handwriting (roo) 1 syllables Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a term for a kangaroo or a friend. Example Sentence The roo hopped across the field. More Example Sentences He called his friend a roo today. Synonyms kangaroo; buddy Antonyms none; no antonyms Hear It! Say It! Write It! roo Switch to cursive Start Share with your friends: