From Longman Dictionary of Contemporary Englishbarrettebar‧rette /bæˈret/ noun [countable]  American EnglishDCB a small metal or plastic object used to keep a woman’s hair in place SYN hair-slide British English
                                                    
                                                Examples from the Corpus
barrette• The silver hair, pulled back in a barrette from her heart-shaped face, seems to match, too.• We wore pixies held fast by little plastic rabbit barrettes.Origin barrette (1900-2000) French barre;  → BAR1 
