Rollerblade, perhaps (5)
I believe the answer is:
skate
'rollerblade perhaps' is the definition.
(I know that Rollerblade is a type of in-line skate)
This is all the clue.
(Other definitions for skate that I've seen before include "Fish of ray family" , "Flat fish" , "Glide on ice; ray" , "Glide like large fish" , "Food fish" .)