Answer:

stepper

Answer	Crossword Clue
STEPPER	High-.. (one in the fast lane)
STEPPER	Ballroom hotshot
STEPPER	Dancer: Slang.

STEPPER	Astaire or Kelly.
STEPPER	Hoofer
STEPPER	Show horse
STEPPER	Fancy dancer
STEPPER	Dancer, informally

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.