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Jyutping gap1 naa2 ji1
Pinyin há nǎ yī

Definitions (Kaifangcidian)
  1. 工作褲 – 工作裤
  2. 連褲童裝 – 连裤童装

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Jyutping haa1 naa2 ji1
Pinyin há nǎ yī

Definitions (Wiktionary)
  1. noun, Cantonese
    boiler suit; jumpsuit (Classifier: 件 c)

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Jyutping gaap3 naa2 ji1
Pinyin há nǎ yī

Definitions (粵典–words.hk)
  1. 名詞
    衫​同​褲連​埋​一件​過​嘅​衣物​;​因為​除​衫​嘅​動​作​好似​劏​蛤​乸​,​因而​得名​(​量​詞​:​件​)
    boilersuit; jumpsuit