WordNet (r) 3.0 (2006):

slops
    n 1: wet feed (especially for pigs) consisting of mostly kitchen
         waste mixed with water or skimmed or sour milk [syn:
         slop, slops, swill, pigswill, pigwash]
    2: cheap clothing (as formerly issued to sailors in Britain)

Moby Thesaurus II by Grady Ward, 1.0:

79 Moby Thesaurus words for "slops":
   barley, bilge, bilgewater, bird seed, bones, bran, carrion,
   cat food, chaff, chicken feed, chop, corn, culm, deadwood,
   dishwater, ditchwater, dog food, draff, dregs, dust, eatage,
   ensilage, feed, filings, fodder, forage, garbage, gash, grain, hay,
   hogwash, husks, leavings, lees, mash, meal, oats, offal,
   offscourings, old clothes, orts, parings, pasturage, pasture,
   pet food, potsherds, provender, rags, raspings, refuse, riffraff,
   scourings, scrap iron, scraps, scratch, scratch feed, scum, scurf,
   sewage, sewerage, shards, shavings, silage, slack, slag, slop,
   slough, straw, stubble, sweepings, swill, tares, tatters, wastage,
   waste, waste matter, wastepaper, weeds, wheat