Aerobics class with a platform (4)
I believe the answer is:
step
(Other definitions for step that I've seen before include "Part of a stairway" , "Tramp" , "Foot movement" , "Tread - stage" , "Stair" .)
I believe the answer is:
step
(Other definitions for step that I've seen before include "Part of a stairway" , "Tramp" , "Foot movement" , "Tread - stage" , "Stair" .)