rockhopper Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a small penguin Eudyptes crestatus of Antarctica and the Falkland Islands and New Zealand with a yellow crest on each side of its head Example Sentence The rockhopper slid into the water. Spelled as one word. Synonyms penguin; Eudyptes crestatus; New Zealand penguin Antonyms hill Hear It! Say It! Write It! rockhopper Switch to cursive Start Share with your friends: