Escalator surface (4)
I believe the answer is:
step
(Other definitions for step that I've seen before include "Stride" , "Football" , "Gradation" , "Second half of quick 20?" , "Put foot on a pest" .)
I believe the answer is:
step
(Other definitions for step that I've seen before include "Stride" , "Football" , "Gradation" , "Second half of quick 20?" , "Put foot on a pest" .)