Cycling loses its attraction, maybe hailstones pepper ground (8)
I believe the answer is:
allspice
'pepper ground' is the definition.
(type of pepper ground as a spice)
I can't explain the rest of the clue.
(Other definitions for allspice that I've seen before include "Dried aromatic fruit from the West Indies" , "Pill case (anag.)" , "Aromatic dried fruit of a Caribbean tree" , "fragrant plant" , "Aromatic West Indian tree" .)