boleroPronunciation: /bəˈlɛːrəʊ/Definition of bolero noun (plural boleros) 1a Spanish dance in simple triple time. a piece of music for or in the time of a bolero. 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 US English dictionary