Shigetaka Kurita's invention originally, bound to provide springboard for long-running event? (3,4)
I believe the answer is:
ski jump
'provide springboard for long-running event?' is the definition.
I can't judge whether this definition defines the answer.
'shigetaka kurita's invention originally bound' is the wordplay.
'originally' says to take the initial letters.
'bound' becomes 'jump'.
The initial letters of 'shigetaka kurita invention' is 'ski'.
'ski'+'jump'='SKI-JUMP'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for ski jump that I've seen before include "Event at winter Olympics" , "Winter sports activity" , "Slippery slope" , "Winter sports slope" , "one's gone to great lengths clearing?" .)