Peloton:
THE Tour de France is under way again. As they wind their way through the countryside, the 170 or so competitors will group tightly together in a pack – known as the peloton – to reduce air resistance and save their legs.
Noted in From “A swarm of 3D printed cyclists reveals the best position in the pack,” Steve Cassidy, NewScientist (14 July 2018, paywall).