GNU Collaborative International Dictionary of English

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1.       
   ‖Rhonchus , n.; pl. Rhonchi . [L., a snoring, a croaking.] (Med.) An adventitious whistling or snoring sound heard on auscultation of the chest when the air channels are partially obstructed. By some writers the term rhonchus is used as equivalent to râle in its widest sense. See Râle.
   1913 Webster