Someone advertising for customers in an aggressive way.

A person, at a racecourse, who offers supposedly inside information on which horse is likely to win.

(colloquial) An informer in the Irish Republican Army.

(card games) In the game of solo, a proposal to win all eight tricks.

(transitive) To flaunt, to publicize/publicise; to boast or brag; to promote.

(UK, 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.

(UK, 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.

(intransitive) To look for, try to obtain; used with for.