The passage for the breath from the larynx to the lungs; the trachea; the weasand.  See Illust. under Lung.
                                                            
                                                     
                        
                                                
                        
                        
                            membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi 
                                                            
                                                     
                        
                                                
                        
                        
                            The tube that leads from the larynx (voice box) to the lungs. Another name for it is the trachea.