pump track
n.— «A pump track is a small, roughly circular track that has a series of small jumps and rollers that require not only skill and timing, but also tremendous anaerobic and aerobic fitness.» —“SRAM’s Dirt Jump Contest, Force group, Ride Zone and Industry Cup highlight Sea Otter” VeloNews Mar. 16, 2006. (source: Double-Tongued Dictionary)
Further reading
Astronauts returning from space say they experience what’s called the overview effect, a new understanding of the fragility of our planet and our need to reflect on what humans all share as a species. A book about the end of the universe...
In the 15th century, the word respair meant “to have hope again.” Although this word fell out of use, it’s among dozens collected in a new book of soothing vocabulary for troubled times. Plus, baseball slang: If a batter...