local horse race; grass-roots horse racing
Refers to small-scale, local horse races, often held at unofficial tracks or as community events, distinct from major professional racing circuits.
A local horse race was held at the summer festival.
Compound of 草 (くさ, 'grass') and 競馬 (けいば, 'horse racing'), literally 'grass horse racing', suggesting races held on grassy fields or informal settings.