Slop \Slop\, v. t. [imp. & p. p. {Slopped}; p. pr. & vb. n.
{Slopping}.]
1. To cause to overflow, as a liquid, by the motion of the
vessel containing it; to spill.
[1913 Webster]
2. To spill liquid upon; to soil with a liquid spilled.
[1913 Webster]