"Tall roofline" refers to the height of a roof on a building or vehicle. It means that the roof is higher than usual, providing more vertical space inside. Full definition
Though it is the same length, width, and wheelbase as the two - door coupe, the Gran Coupe has a 0.5 - inch taller roofline to provide extra headroom for the rear passengers. (automobilemag.com)
The combination of a low floor and tall roofline make for enough headroom to withstand a stovepipe hat revival. (kbb.com)
It's also got a very tall roofline that makes it easy to get in and out of the Patriot even for taller people. (bestride.com)