a dance of the late 1920s that originated in America, involving a sinuous rotation of the hips
black bottom in American English
noun
an American dance, popular in the late 1920s, marked by emphatic, sinuous movements of the hips
Word origin
[1910–15, Amer.]This word is first recorded in the period 1910–15. Other words that entered Englishat around the same time include: coverage, grass roots, homeroom, insulin, radio