tap-dance的词源解释,tap-dance来源

1918, from tap (n.2) in the sense of "metal plate over the heel of a shoe" (1680s) + dance (v.). As a verb by 1927. Tap-dancing is by 1919; tap-dancer by 1923. Tap-shoe, as used in the dance, is attested by 1932.

An earlier name was hard-shoe dancing (by 1891). Earlier a tap dance was a social dance in which a non-dancer could cut in with another's partner by stepping up and tapping the person gently on the shoulder (by 1908).

该词起源时间：1918年