통통

1. with a thump
A word imitating the sound made when a small drum, an empty wood pail, etc., is repeatedly beaten.

2. with a stamp
A word imitating the sound made when a foot stamps a hard spot repeatedly.

3. (no equivalent expression)
A word imitating the sound made when a tense string, etc., is plucked repeatedly.

4. in drops
A word imitating the sound made when small water drops or lumps keep falling.

5. in operation
A word imitating the sound made when a small motor is operated.