Entry
  1. Adverb taking the 'to' particle, Adverb (fukushi), Noun

    boom; bang; wham

    Onomatopoeic or mimetic word

    絶え間ない騒音で耳ががーんとなった。
    The continual noise deafened us.
  2. Interjection (kandoushi)

    Oh my God!; What a shock!

    Manga slangOnomatopoeic or mimetic word

Also written があんがーん

Pitch on OJAD