the.com/thoroughbred

A horse bred for one job: go fast, break hearts, occasionally break legs.

means A horse (or by extension, anything) of pure, carefully traced pedigree bred specifically for speed and racing performance.

from From 'thorough' (complete, utter) plus 'bred' — literally 'bred all the way through.' The word crystallized around the English horse-racing world, tied to the Thoroughbred breed descended almost entirely from a handful of foundation sires brought from the Middle East in the late 1600s and early 1700s, their bloodlines tracked obsessively in studbooks ever since. The sense soon galloped beyond horses, into 'thoroughbred' as praise for anything — or anyone — of flawless, pedigreed quality.

origin
all descend from 3 stallions, 1600s
bloodline proof
every studbook traces to Darley Arabian
fragility
massive bodies on surprisingly thin ankles
career length
peak racing age is just 3 to 5
the.com · every word