Definition of aorta:
		
              °The great 
artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.
            
 
            
            
          
            
              °The liveliest part of something.
            
            
            
              
                "Tracing their battles, I had many occasions to walk along Second Avenue, the aorta of the Lower East Side, exploring places that were once as vibrant and tumultuous as Midtown Manhattan."
              
	 
 
		
		
		Definition of aorta:
		
              °The great 
artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.
            
 
            
            
          
            
              °The liveliest part of something.
            
            
            
              
                "Tracing their battles, I had many occasions to walk along Second Avenue, the aorta of the Lower East Side, exploring places that were once as vibrant and tumultuous as Midtown Manhattan."