The New Dictionary of Cultural Literacy, Third Edition. 2002.
hat trick
In some sports, such as ice hockey, three goals by one player in a single game: Lemieux scores for the third time tonight; he finally has the hat trick hes been looking for all season.
By extension, a hat trick is an outstanding performance by an individual, or a particularly clever or adroit maneuver: She pulled off a hat trick with her presentation to the committee.