コトコト

コトコト, ことことkotokoto

adverb

  1. with a rattling sound
  2. with a (gentle) clinking sound
  3. rapping (on a door)
  4. (cooking) at a simmer
  5. (boiling) gently
  6. (bubbling) lightly

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences