(Britain, slang, horse-racing, transitive) To spy out information about (a horse, a racing stable, etc.).
(US, slang, horse-racing, transitive) To give a tip on (a racehorse) to a person, with the expectation of sharing in any winnings.
(Britain, slang, horse-racing, intransitive) To spy out the movements of racehorses at their trials, or to get by stealth or other improper means the secrets of the stable, for betting purposes.
(US, slang, horse-racing, intransitive) To act as a tout; to give a tip on a racehorse.
