a horse that is regularly entered in stake races.
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Origin of stake horse
An Americanism dating back to 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for stake horse
His race showed that Trainer John Morris has been doing some good work with the colt and has a stake-horse in his stable.History of the Kentucky Derby, 1875-1921|John Lawrence O'Connor