Slump

1. To lump; to throw into a mess.
2. A boggy place.
3. The gross amount; the mass; the lump.
4. To fall or sink suddenly through or in, when walking on a surface, as on thawing snow or ice, partly frozen ground, a bog, etc., not strong enough to bear the person.
5. The noise made by anything falling into a hole, or into a soft, miry place.