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Jyutping hung4 mok2
Pinyin hóng mò

Definitions (Wiktionary)
  1. noun
    iris (part of the eye)
    (syn.) 虹彩

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Jyutping hung4 mok2
Pinyin hóng mó

Definitions (CC-CEDICT)
  1. iris (of an eye)
Definitions (粵典–words.hk)
  1. 名詞
    眼球​內部​含有​色素​嘅​環​狀​薄膜​,​可以​調節​瞳孔​大小​(​量​詞​:​塊​/​層​)
    iris