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Jyutping bat1 bou1
Pinyin bì bū

Definitions (Wiktionary)
  1. adj, literary, of birds
    wagging tails
  2. noun, literary
    Synonym of 烏鴉/乌鸦 (wūyā, “crow; raven”).
    (syn.) 烏鴉, 乌鸦