Definition of "racecourse"

By Savernake the train was 4½min early; we then had the thrill of sweeping through Newbury at 95 m.p.h.—and one wonders if any of the punters on the neighbouring racecourse had any eyes for our flying cavalcade as we swept by, for it was a race day—[...].

1964 June, Cecil J. Allen, “Locomotive Running Past and Present”, in Modern Railways, page 387