sprung floor
n.— «One of the cooler aspects of this new auxiliary gym is it has what’s called a “sprung floor,” which helps takes the stress off of people’s legs while they’re here playing basketball or volleyball.» —“Inside the Phoenix’s New Fitness Center” by Adam Aaro WBAy-TV (Green Bay, Wisconsin) Sept. 19, 2007. (source: Double-Tongued Dictionary)
Further reading
Steven from San Antonio, Texas, seeks a word that means “the opposite of trauma.” Perhaps eustress, literally “good stress”? Or harmonization? Placid? Is there a better term for this? This is part of a complete episode...
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...