bolero Syllabification: (bo·le·ro)Pronunciation: /bəˈle(ə)rō/Definition of bolero noun (plural boleros) 1a Spanish dance in simple triple time. a piece of music for the bolero dance. 2 (also bolero jacket) a woman’s short open jacket. Origin: late 18th century: from Spanishbolero in other Oxford dictionaries Definition of bolero in the British & World English dictionary