SLOP (2)
Source: 566, 567
slop (2). Slop, n. a puddle, wetness, mean liquor, clothing
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Slop, v. t. [imp. & p. p. Slopped (?); p. pr. & vb. n. Slopping.] 1. 1. To cause to overflow, as a liquid, by the motion of the vessel containing it; to spill.
2. 2. To spill liquid upon; to soil with a liquid spilled.