bumper
n.β Β«Collier Hillβs first start was in a National Hunt Flat raceβmore commonly known as a “bumper”βdesigned for horses deemed too slow to win on the Flat en route to a career over jumps.Β» ββBargain Buy Collier Hill Can Strike in HK Vase” Virtual FormGuide (Australia) July 12, 2006. (source: Double-Tongued Dictionary)