top tub
n.— «The best spot to advertise on a Formula 1 car is the “top tub” or bonnet [hood] to use a layman’s term. This is mainly due to the use of the on-board footage during the race coverage.» —“The Circuit: How clear is your logo?” by Robert-Jan Bartunek in London, United Kingdom CNN.com Sept. 25, 2007. (source: Double-Tongued Dictionary)
Further reading
A flashlight doesn’t flash. It provides a steady beam of light. So why is it called a flashlight? The earliest versions lit up only briefly before the batteries gave out and required a recharge, so they were literally “flash lights...
Twice a day the River Thames recedes, revealing a muddy shoreline. Hobbyists known as mudlarks stroll the surface searching for objects that have found their way into the river over the centuries, everything from ancient Roman jewelry to modern...