Borough-English is a 15 letter English word. It's valid Scrabble word worth 13 points. It's valid Words with friends word worth 15 points.
You can make 1597 anagrams from letters in Borough-english (-begghhilnoorsu).
Middle English word dating back to 1300-50
From this nefarious degradation of woman the custom of borough-English arose, the youngest son becoming the heir.
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