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 money Topics Sports: other sportsc2提供赛马情报的人(常指贩卖情报者) - (especially North American English)
a person who gives information to the police about a crime or criminal Topics Crime and punishmentc2(犯罪行为等的)举报者,告密者