In road bicycle racing, a domestique is a rider who works for the benefit of his team and leader, rather than trying to win the race. In French, domestique translates as "servant". The use of the term dates back to 1911, although such riders had existed before then.
Much of a cyclist's effort is to push aside the air in front of him. Riding in the slipstream of another rider is easier than taking the lead. The difference increases with speed. Racers have known this from the start and have ridden accordingly, often sharing the lead between them. From there it is a small step to employing a rider to create a slipstream while his leader rides behind him.
More complicated tactics become possible as the number of domestiques available increases (see below). Where the domestique finishes a race is less important than the help he gives. During their role as domestiques, riders do not share the fame of leaders such as Eddy Merckx, Bernard Hinault or Miguel Induráin.
However, several domestiques have gone on to achieve fame of their own. Lucien Aimar, who supported Jacques Anquetil, won the 1966 Tour de France. Greg LeMond won the 1986 Tour de France after being Bernard Hinault's domestique in the 1985 Tour de France, as did Chris Froome in 2013 after riding for Bradley Wiggins in 2012. The writer Roger St Pierre said:
It is team tactics which so often win or lose races - and the lieutenants and the dog soldiers who expend their energy blocking chasing moves when they have riders up the road in a position to win. It is they who ride out into the wind so their aces can get an easier ride tucked inside their wheel [close to the rider in front and in his shelter]. Rare indeed is the major victory that cannot be credited in large part to the groundwork laid by the domestiques.