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Jyutping wui2 gun1 si1
Pinyin huì guān si

Definitions (Wiktionary)
  1. verb, Wu, verb-object
    to engage in a lawsuit; to sue somebody
    (syn.) 拍官許, 拍官府, 告狀, 𢫦官司, 打官司, 拍官司, 打官府, 會官司, 打官事