noun. 
                    The act or an instance of breaking up, as a division, dispersal, or disintegration.
                  
                
                  
                    noun. 
                    The discontinuance of a relationship, as a marriage or a friendship.
                  
                
                  
                    noun. 
                    The cracking and shifting of ice in rivers or harbors during the spring.
                  
                
                  
                    noun. 
                    A loss of control or composure.