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- (of a horse) of pure breed, especially of a breed originating from English mares and Arab stallions and widely used as racehorses（马）纯种的, 纯血的（尤指由英国母马和阿拉伯公马交配而生, 广泛用作赛马）。
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- informal of outstanding quality〈非正式〉优秀的, 一流的：
this thoroughbred car affords the luxury of three spoilers.
这辆品质上乘的汽车奢华地提供了三个气流偏导器。
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- a horse of a thoroughbred breed纯种马, 纯血马。
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- informal an outstanding or first-class person or thing〈非正式〉优秀的人; 一流的东西：
this is a real thoroughbred of a record.
这的确是一张优质唱片。