CROCK (2)

Source: 566, 567

crock (2). Crock, v.t. to blacken with foul matter

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Crock, v. t. [imp. & p. p. Crocked (krŏkt); p. pr. & vb. n. Crocking.] To soil by contact, as with soot, or with the coloring matter of badly dyed cloth.