Skid on playground item (5)
I believe the answer is:
slide
This clue is a double definition.
'skid' is the first definition.
('slide' can be a synonym of 'skid')
'playground item' is the second definition.
(I've seen this before)
'on' acts as a link.
(Other definitions for slide that I've seen before include "leading to a fall" , "Microscope glass" , "Picture" , "Transparency" , "Idles about on children's chute" .)