You give away horses worth a thousand louis; you save the lives of ladies of high rank and beauty; under the name of Major Brack you run thoroughbreds ridden by tiny urchins not larger than marmots; then, when you have carried off the golden trophy of victory, instead of setting any value on it, you give it to the first handsome woman you think of!
There are no more uses of "thoroughbred" in the book.
Show samples from other sources
A feral hog, some hornets, and a prodigy led me through the woods so that I might stumble upon the first girl I ever kissed riding "TOC like he’s a thoroughbred next to the grave of an Austro-Hungarian Archduke.
John Green -- An Abundance of Katherines
There would be burnished, stick-legged Thoroughbreds, their jockeys in billowing bright silks, careering past.