Definition of warn someone off the course in English:

warn someone off the course

phrase

Horse racing
  • Prohibit someone who has broken the laws of the Jockey Club from riding or running horses at meetings under the Jockey Club's jurisdiction.

    • ‘Owner Darren Smith is warned off for six months for laying his own horse on the exchanges.’
    • ‘Was this a chance to warn him off the course?’
    • ‘The murkier side of racing continued to make headlines as talented ex-jockey Graham Brown was warned off for eight years after being found guilty by the Jockey Club of bringing the sport into disrepute.’
    • ‘After retiring from racing, he became a trainer at Lambourn, but his racing life came to an abrupt halt in October 1992, when the Jockey Club warned him off (banned him) for 10 years.’
    • ‘Ex-jockey Dermot Little was warned off for a further 20 years while another former rider Graham White was banned for five years.’