tipster
noun /ˈtɪpstə(r)/
/ˈtɪpstər/
- a person who tells you, often in exchange for money, which horse is likely to win a race, so that you can bet on it and win moneyTopics Sports: other sportsc2
- (especially North American English) a person who gives information to the police about a crime or criminalTopics Crime and punishmentc2