tumblehome n. the slope at which an automobile’s sides or windows angle to meets its roof. Etymological Note: Originally applied to the design of seacraft, in which the upper part of the sides of a boat or ship—the topsides—angles upwards from a wider point closer to the waterline. (source: Double-Tongued Dictionary)
Further reading
Understanding the varieties of conversational styles can mean the difference between feeling you’re understood and being insulted. “High-involvement” speakers interrupt or talk along with someone else to signal their enthusiasm...
One of the most powerful words you’ll ever hear — and one of the most poignant — isn’t in dictionaries yet. But it probably will be one day. The word is endling, and it means “the last surviving member of a species.” The...