1. nickname given to people acting silly, dorky, or roon-ish. 2. what you call a nerdy friend. 3. common nick name for a stray dog. 3. can be used as a noun or adjective and an adverb. 4. Unique's name for an animal turned into a sentimental nickname for her friends. 5. nick name for someone you are close to.
you can say "oh Roon" for a sentiment. Roonie roon! Expresses that one is excited about something.