(Chiefly with reference to the 1920s) a devotee of jazz; especially a flapper, a fashionable young woman interested in jazz music and dancing, and frequently regarded as somewhat dissolute.
Origin
Early 20th century.
Definition of jazz baby in US English:
jazz baby
noun
(Chiefly with reference to the 1920s) a devotee of jazz; especially a flapper, a fashionable young woman interested in jazz music and dancing, and frequently regarded as somewhat dissolute.