TIPSTER
tipster, tout
(noun) one who sells advice about gambling or speculation (especially at the racetrack)
Source: WordNet® 3.1
Etymology
Noun
tipster (plural tipsters)
A person who provides tips or advice to others, for example on the form of racehorses or the stock market. [from later 19th c.]
(video games, informal) One who provides tips or hints on how to succeed at a game.
Anagrams
• Pitters, pitters, spitter
Source: Wiktionary
Tip"ster, n. [Tip a hint + -ster.]
Definition: One who makes a practice of giving or selling tips, or private
hints or information, esp. for use in gambling upon the probable
outcome of events, as horse races.
Source: Webster’s Unabridged Dictionary 1913 Edition