CLAY (2)

Source: 566, 567

clay (2). Clay, v.t. to cover with clay, to purify, as sugar

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Clay, v. t. [imp. & p. p. Clayed (?); p. pr. & vb. n. Claying.] 1. 1. To cover or manure with clay.
2. 2. To clarify by filtering through clay, as sugar.