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Jyutping sou1 muk6
Pinyin sū mù

Definitions (CC-CEDICT)
  1. sappan wood (Caesalpinia sappan), used in Chinese medicine
  2. administrative subdivision of banner 旗 (county) in Inner Mongolia (Mongol: arrow)
Definitions (Wiktionary)
  1. noun
    sum (level of administrative division in Mongolia, Russia and China)