把口瑯過油 [－－－过－]

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Definitions (粵典–words.hk)
  1. 語句、俚語
    專講​好​説​話​氹​人
    refers to someone who usually pleases or flatters people with their words; "greasy"; smooth-tongued; literally: mouth greased with oil
  2. 近義詞
    口甜舌滑
  3. 參看
    把口啷過油、把口𠺘過油

把口瑯過油 [－－琅过－]

Jyutping baa2 hau2 long2 gwo3 jau4
Pinyin bǎ kǒu láng guò yóu

Definitions (CC-CANTO)
  1. to be a smooth talker; to be a sweet talker [colloquial]