喀嚓

kāchā
(onom.) breaking or snapping

CEDICT

onomatopoeic

Entry Composition

1 喀 kā (onom.) sound of coughing or vomiting
2 嚓 chā
  1. (onom.) used in 喀嚓 kāchā and 啪嚓 pāchā
  2. Taiwan pr. cā