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Jyutping niu5 goek3 haa6 muk6
Pinyin niǎo jiǎo xià mù

Definitions (CC-CEDICT)
  1. Ornithopoda, suborder of herbivorous dinosaurs including iguanodon
Definitions (Wiktionary)
  1. noun
    Synonym of 鳥腳亞目/鸟脚亚目 (niǎojiǎoyàmù)
    (syn.) 鳥腳亞目, 鸟脚亚目