Plural of bolero: a lively Spanish dance in triple time, or a short jacket that doesn't cover the midriff.
From Spanish 'bolero', possibly derived from 'bola' (ball or sphere), as the dance involves turning and circular movements; came into English in the 18th century.
The bolero dance became famous through Maurice Ravel's haunting 1928 composition that repeats the same melody while the orchestration grows increasingly intense—it's hypnotic repetition turned into high art!
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