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Jyutping lou5 nau2
Pinyin lǎo xiǔ

Definitions (Wiktionary)
  1. adj
    old and useless; decrepit
  2. pron, as self-address by an old person, humble, literary
    I, the old and infirm
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)