The Collaborative International Dictionary of English v.0.48:
Slop \Slop\, n. [OE. sloppe a pool; akin to As. sloppe, slyppe,
the sloppy droppings of a cow; cf. AS. sl?pan to slip, and E.
slip, v.i. Cf. Cowslip.]
1. Water or other liquid carelessly spilled or thrown aboyt,
as upon a table or a floor; a puddle; a soiled spot.
2. Mean and weak drink or liquid food; -- usually in the
3. pl. Dirty water; water in which anything has been washed
or rinsed; water from wash-bowls, etc.
Slop basin, or Slop bowl, a basin or bowl for holding
slops, especially for receiving the rinsings of tea or
coffee cups at the table.
Slop molding (Brickmaking), a process of manufacture in
which the brick is carried to the drying ground in a wet
mold instead of on a pallet.