1
                    
        a
    
          
                                          
              
          
                                                      : a usually continuous central strand of spongy tissue in the stems of most vascular plants that probably functions chiefly in storage                                      
                
                    
        b
    
          
                                          
              
          
                                                      : any of various loose spongy plant tissues that resemble true pith                                      
                
                    
        c
    
          
                                          
              
          
                                                      : the soft or spongy interior of a part of the body                                      
                
                    
2
                    
        a
    
          
                                          
              
          
                                                      : the essential part : core                                      
                
                    
        b
    
          
                                          
              
          
                                                      : substantial quality (as of meaning)                                      
                
                    
3
                    
                  
            
              pithed; pithing; piths            
        
    1
                    
        a
    
          
                                          
              
          
                                                      : to kill (an animal) by piercing or severing the spinal cord                                      
              
                             
pith cattle
                         
                
                    
        b
    
          
                                          
              
          
                                                      : to destroy the spinal cord or central nervous system of (an animal, such as a frog) usually by passing a wire or needle up and down the spinal canal                                      
                
                    
2
                    
                                          
              
          
                                                      : to remove the pith from (a plant stem)                                      
                
                    
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  Merriam-Webster unabridged




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