Boots with blades or wheels (6)
I believe the answer is:
skates
'boots with blades or wheels' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for skates that I've seen before include "Boots for ice rink" , "Glides over, say ice" , "Roller......,ice....." , "Sports equipment worn on the feet" , "One glides on them, as over ice" .)