moon·walk 
(mnwôk′)
(mnwôk′)n.
1. A walk on the surface of the moon by an astronaut.
2. A dance step in which the dancer creates the illusion of walking forward while actually sliding back one foot at a time.
intr.v. moon·walked, moon·walk·ing, moon·walks
1. To walk on the surface of the moon.
2. To perform the moonwalk dance step.
moonwalk′er n.