1
                           general:: 
                            Recovering one's health, as in I heard you had the flu, but I'm glad to see you're on the mend. This idiom uses mend in the sense of "repair." [c. 1800]
                        
                        
 
                        
                            American Heritage Idioms
                        
                        
                    
                    
                        2
                           general:: 
                            Phrase(s): on the mend 
getting better; becoming healthy again.  •  I cared for my father while he was on the mend.  •  I took a leave of absence from work while I was on the mend.
                        
                        
 
                        
                            McGrawhill's American Idioms And Phrasal Verbs