しゅんしゅん
shunshun

To-Adverb

1. with a whistle (e.g. of a kettle)

Onomatopoeia
薬缶 やかんがシュンシュンいうまで ちなさい。
yakanga shunshun iumade machinasai.
Wait till the kettle begins to sing.
Other forms: