tail risk
n.— «“Tail risk,” as it is known to quantitative traders, for where it falls in a bell-shaped probability curve. Tail risk, broadly speaking, is whatever financial cataclysm is believed by markets to have a 1 percent chance or less of happening.» —“In Nature’s Casino” by Michael Lewis New York Times Aug. 26, 2007. (source: Double-Tongued Dictionary)
Further reading
You know when a cat’s tail goes straight up and appears to vibrate? Emily from Coventry, Rhode Island, says her family has their own word for that: fribbling. She says her family also made up the word bomple to denote the action of fruit...
Several years ago, the National Endowment for the Arts devoted a whole issue of its magazine to the topic of “The Art of Failure: The Importance of Risk and Experimentation.” Writers, artists, and musicians all shared their insights...