distance post
noun
- N. Amer. a post placed at a specified distance before the finishing post on a racecourse, which a horse must have passed when the winner finishes in order to qualify for a subsequent heat〈北美〉合格段标志杆（在跑马场终点竿前一定距离放置的竿, 赛马要取得下一场比赛资格, 在获胜马到达终点时必须经过此竿）。