Definition of back straight in English:

back straight

Line breaks: back straight

noun

British
  • The part of a racecourse that is furthest from the grandstand and parallel to the home straight.
    More example sentences
    • He fell at the last fence on the back straight but horse and jockey get up unscathed.
    • The triangular course is reasonably flat although does have a dip at the beginning of the back straight, the famous Swinley Bottom.
    • I knew in the back straight he was going to run a big race from there on in.

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