Callery pear
noun
                                                                                                                            
                                                            Cal·le·ry pear
                    
                                                                                                              
                                                                                                                                  ˈka-lə-rē-  
                                                      
                                                          
            
            variants  
 or callery pear
        
    1
                    
                                          
              
          
                                                      : a deciduous tree (Pyrus calleryana) of the rose family that has upright branches forming a conical crown, heart-shaped glossy leaves with finely serrated margins, showy clusters of white flowers, and small, bitter, brownish round fruits                                      
                
Note: The Callery pear is native to China, Japan, Vietnam, and Korea. Its twigs are often tipped with a single thorn.
2
                    
                                          
              
          
                                                      : any of several thornless ornamental cultivars of the Callery pear                                      
              
                             
Callery pears … have earned both a 2005 Urban Tree of the Year award … and a place on the U.S. Fish & Wildlife Service list of highly invasive plants in the Mid-Atlantic.— Susan Milius
Susan Milius
                         
                
                                
            especially                
          
                                                      : bradford pear                                       
              
                             
            … the campaign to curtail the planting of ornamental Bradford pears (also called callery pears). These trees are notorious for "weak crotches," which are right where the heavy snow broke off limbs.    — Michael Martin
Michael Martin          
                         
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  Merriam-Webster unabridged




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