Noun
Especially in the Tour de France: the yellow shirt worn by the leader of a stage of a cycling race, which is then awarded to the cyclist who wins the race with the fastest overall time.
(by extension) A cyclist who wears such a jersey or shirt; hence, the leader of a stage of a cycling race, or the winner of a cycling race.
Source: en.wiktionary.orgI'm 28, and for the next six or seven years my goal is to try to fight for the yellow jersey. If I can win it once I would be chuffed to bits. Chris Froome