english
                    
                    
                    
                        1
                           general:: 
                           Third-class mail, such as unsolicited advertisements and flyers, that is sent indiscriminately. For example, While we were on vacation the front hall filled up with junk mail. [c. 1950]
                           
                           
                           
                           
                        
    
                       
                    
                        
                        
                        
                    
 
                    
                        American Heritage Idioms
                    
                    
                    
                        2
                           general:: 
                           Phrase(s): junk mail  annoying, unsolicited mail, such as promotional letters, etc.  •  I am so incredibly tired of getting pound after pound of junk mail every day. I could just scream.
                           
                           
                           
                           
                        
    
                       
                    
                        
                        
                        
                    
 
                    
                        McGrawhill's American Idioms And Phrasal Verbs