bronchi
  支氣管
  Bron·chi n. pl. Anat. See Bronchus.
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  Bron·chus n.; pl. Bronchi   Anat. One of the subdivisions of the trachea or windpipe; esp. one of the two primary divisions.
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  bronchus
       n : either of the two main branches of the trachea [syn: bronchial
           tube]
       [also: bronchi (pl)]