0 in road racing (= bicycle races on roads), a rider in a team whose job is to help the team leader, for example by riding in front of them, setting the pace (= speed), or getting drinks for them:
An average domestique might make $50,000, a good climber $250,000 and a serious Tour de France contender $1 million.
He was good enough to be a featured rider on some other teams, but joined Postal as the world's best domestique.
Yesterday he won a stage, but today he will be back to domestique service as the race heads into the mountains.