Detected as the Bully of humility, who had built his windy reputation upon lies, and in his boastfulness had put the honest truth as far away from him as if he had advanced the mean claim (there is no meaner) to tack himself on to a pedigree, he cut a most ridiculous figure.
There are no more uses of "pedigree" in the book.
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Do you know the dog’s pedigree?
Unless you are an expert in the breed you are looking to buy, it’s unlikely that you, or any novice buyer, will be able to determine for yourself the quality of any untitled dogs in a pedigree.