noun
tick-tock; chipping sound
Onomatopoeic word for a sharp, rhythmic ticking or chipping sound, like a clock or small hard objects striking each other.
古い時計ががちんがちんと音を立てている。
The old clock is ticking loudly.
彼は石をがちんがちんとぶつけ合わせた。
He clinked the stones together.