#meatus  a natural body passageway
  supertype:  passage.anatomical_structure__passageway  a path or channel or duct through or along which something may pass; "the nasal passages"
  subtype:  auditory_meatus__acoustic_meatus__ear_canal__earcanal__auditory_canal__external_auditory_canal  either of the passages in the outer ear from the auricle to the tympanic membrane
  subtype:  nasal_meatus  the passages in the nasal cavity formed by the projections of the nasal conchae

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