b. ‘ charge of lead.’This is merely a mistake of Bailey's for Charre of Lead, used in Scotland in 14th cent., explained by Cowel in his Interpreter, whence it passed into succeeding Law dictionaries, and into Kersey 1708–21. See charn.2 2. Bailey's error is duly perpetuated in modern Dictionaries, as if charge of lead were a current expression.
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1721 N. BaileyUniversal Etymol. Eng. Dict. (at cited word) A charge of Lead is 36 Pigs, each containing six Stone wanting two Pound.