kangaroo Get Printable Handwriting (kan-ga-roo) 3 syllables Learn It! Spelling Test Definition noun. any of various leaping planteating marsupials native to Australia and neighboring islands with short forelegs and strong large hind legs Example Sentence I saw a kangaroo at the zoo. Synonyms roo; leaping marsupial; jumping marsupial Antonyms snake Share with your friends: