Ice skate part (5)
I believe the answer is:
blade
'ice skate part' is the definition.
('blade' is part of 'ice skate')
This is all the clue.
(Other definitions for blade that I've seen before include "A knife, or a dashing fellow" , "Runner on an ice-skate" , "See 24 Across" , "Sword" , "Cutting part of grass?" .)