옹알거리다, 지껄이다
to talk rapidly and unintelligibly
졸졸 흐르다, 웅성거리다
to make a continuous low, indistinct sound, as of water flowing over stones
옹알이, 지껄임
unintelligible or meaningless speech or sounds
졸졸 소리, 물소리
the sound of water flowing over stones