► 名詞競馬  [けいば]    
meaning:  horse racing  rank: 3☆ 
日本で競馬は
合法賭博の
一つだ ⇨ Horse racing is one of the legal gamblings in Japan
More examples:- 競馬で大穴を狙う ⇨ Bet on a long-shot dark horse
 - 彼は競馬で十万円擦った ⇨ He lost ¥100k with horse betting
 - 彼は競馬に病みつきになっている ⇨ He is addicted to horse racing (gambling)
 - 一回競馬で勝ったんで調子こいてどんどん賭けたら全部負けた ⇨ I’d won with a horse racing once, so I got cocky and kept betting and ended up losing all