hippodrŏmos

i, m.
I. a race-course for horses, hippodrome, Plaut. Bacch. 3, 3, 27; Plin. Ep. 5, 6, 19; Mart. 12, 50, 5; Sid. Ap. 2, 2.
Lewis & Short
A Latin Dictionary, 1879
An open-access project