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Jyutping ngan4 ngaa4
Pinyin yín yá

Definitions (粵典–words.hk)
  1. 擬聲詞
    形容​爆炸​嘅​聲​音​;​源自​卡通片
    sound of explosion, originating from anime
    • 蕉!銀芽!
      蕉!银芽!
      ziu1! ngan4 ngaa4!
      (firing a laser gun)! KABOOM!
  2. 參看
    銀芽
Definitions (Wiktionary)
  1. intj, Cantonese, onomatopoeic
    explosion; kaboom