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Jyutping gon1 wai3
Pinyin gān yuē

Definitions (Wiktionary)
  1. verb
    to feel sick; to retch; to dry-heave
    (syn.) 干呕, 乾嘔

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Jyutping gon1 jyut6
Pinyin gān yue

Definitions (CC-CEDICT)
  1. to dry-heave
  2. to retch