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on-track
on-track adj. 
/ˌɑnˈtræk/ (of betting) done at the racetrack.
Brit. /ˌɒnˈtrak/
, /ˌɒnˈtrak/U.S. /ˌɔnˈtræk/
, /ˌɔnˈtræk//ˌɑnˈtræk/ΘΚΠ
society > leisure > entertainment > pastimes > betting > [adjective] > type of betting
ante-post1865
off-track1931
off-the-course1951
off-course1960
on-course1964
on-track1964
1964 A. Wykes Gambling 340 Whereas the on-track betting turnover was the equivalent of $64,680,000, off-track betting brought in $65,240,000.
2002 Dallas Morning News (Nexis) 20 Oct. 1 h Attendance at the tracks has been dropping for years. Ditto the take from on-track wagering.
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as lemmas