Green’s Dictionary of Slang

dancers n.

[one dances down the stairs or on one’s feet]

1. [mid-17C+] (orig. UK Und.) a flight of stairs.

2. [1920s+] the feet.

In phrases

have it on one’s dancers (v.)

[1970s] to run off, to escape.

track (up) the dancers (v.) (also lope..., pike..., prat) [SE track, to make one’s way]

[late 17C–mid-19C] to rush quickly up the stairs; also with down.