fat tail

noun5

1. •
   The relatively high probability of a relatively extreme outcome.
2. •
   A tail of a probability distribution with significantly higher kurtosis than a normal distribution (which has kurtosis = 0).
3. •
   A tail of a probability distribution with infinite variance.
4. •
   A mass of fat stored in the rump of a beast as an adaptation to heat and harsh environmental conditions or selection by man.
5. •
   Synonym of fat-tailed sheep.