| Sludge 1. (n.) Mud; mire; soft mud; slush. 2. (n.) Small floating pieces of ice, or masses of saturated snow. 3. (n.) See Slime. Thesaurus Entries Dry Ice, berg, calf, clay, cryosphere, dregs, firn, floe, frazil, frozen water, glaciation, glacier, glacieret, glaze, glazed frost, glop, goo, granular snow, ground ice, growler, gumbo, gunk, ice, ice banner, ice barrier, ice belt, ice cave, ice cubes, ice dike, ice field, ice floe, ice foot, ice front, ice island, ice needle, ice pack, ice pinnacle, ice raft, ice sheet, iceberg, icefall, icequake, icicle, jokul, lolly, mire, muck, mud, neve, nieve penitente, ooze, pack ice, precipitate, residue, scum, serac, shelf ice, silt, slab, sleet, slime, slip, slob, slop, slosh, slush, snow ice, snowberg, splosh, squash, swill | ![]() |