啪嚓

pāchā
  1. (onom.) (sound of sth smashing as it hits the ground)
  2. (onom.) (sound made by a camera shutter)

CEDICT

onomatopoeic

Entry Composition

1 啪 pā
  1. (onom.) bang
  2. pop
  3. pow
2 嚓 chā
  1. (onom.) used in 喀嚓 kāchā and 啪嚓 pāchā
  2. Taiwan pr. cā