The Collaborative International Dictionary
                    Engrailment
                    
                        
                
                                                                    Engrailment \En*grail"ment\, n.
The ring of dots round the edge of a medal, etc.
--Brande & C.(Her.) Indentation in curved lines, as of a line of division or the edge of an ordinary.
Wiktionary
                    engrailment
                    
                        
                
                                                                    n. 1 The ring of dots around the edge of a medal, etc. 2 (context heraldry English) indentation in curved lines, as of a line of division or the edge of an ordinary.