1. Adverb (fukushi), Adverb taking the 'to' particle

   (rolling) along; (rolling) over and over

   Onomatopoeic or mimetic word

   そんなにコロコロ、言う事を変えないでくれよ。

2. with a bright, ringing sound (e.g. of a bell); (laughing) in a bright, high-pitched tone; merrily

   Onomatopoeic or mimetic word

3. (changing) frequently (of opinions, conversation topic, etc.); constantly; often; always

   Onomatopoeic or mimetic word

4. (losing) all too easily; (being defeated) one after another; in quick succession

   Onomatopoeic or mimetic word

5. Adverb (fukushi), Adverb taking the 'to' particle, Suru verb

   chubby (and cute); plump; round

   Onomatopoeic or mimetic word

6. Adverb (fukushi), Adverb taking the 'to' particle

   chirping (of insects)

   Onomatopoeic or mimetic word

7. croaking (of a frog); ribbit ribbit

   Onomatopoeic or mimetic wordsee ケロケロ

8. Noun

   roller; lint roller; paint roller

   Trademark

Also written ころころkorokoro、ころんころんkoronkoron、コロンコロンkoronkoron