Dwight , 1972 and 1976 Olympic high jump bronze medallist (6)
I believe the answer is:
stones
(Other definitions for stones that I've seen before include "They've been rocking and rolling since the 1960s" , "Onsets with imperial weights" , "Gems -- Mick Jagger's rollers?" , "Weights and pieces of rock." , "lots of rock" .)