Wiktionary
n. (context cycling English) A cyclist who performs well on flat and undulate roads.
Wikipedia
Rouleur is a British cycling magazine first published in 2006 by sportswear brand Rapha and later as a part of Gruppo Media Ltd. The magazine's main focus is road racing but there have been excursions into areas such as cyclo-cross and track racing. Rouleur features photography and serious writing celebrating the passion and beauty of the sport and has built a dedicated and valuable following from both discerning cycling fans and the most influential bike riders in the world.
On Rouleur's genesis, founder Guy Andrews said: "I found a shot and started messing about with some cover ideas, there were no bikes in it, just a road and it made me start to think about how state and formulaic cycling consumer magazines had become. It sounds a bit pretentious now, but I thought there was a bit more to road cycling than fitness specials, pictures of bunch sprints and tests of £1000 bikes."
A rouleur is a type of racing cyclist considered a good all-rounder.