US motor racing (4)
I believe the answer is:
indy
(Other definitions for indy that I've seen before include "US form of motor racing" , "Abandon, discard" , "Racing in fast cars" , "Form of competition between drivers" , "US car race" .)
I believe the answer is:
indy
(Other definitions for indy that I've seen before include "US form of motor racing" , "Abandon, discard" , "Racing in fast cars" , "Form of competition between drivers" , "US car race" .)