Slump

Part of speech: noun (n.)

The gross amount; the mass; the lump. [Scot.]

Part of speech: noun (n.)

1. A boggy place. [Prov. Eng. & Scot.]

2. The noise made by anything falling into a hole, or into a soft, miry place. [Scot.]

Part of speech: verb (v.)

To lump; to throw into a mess. These different groups . . . are exclusively slumped together under that sense. Sir W. Hamilton.

Part of speech: verb (v.)

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. The latter walk on a bottomless quag, into which unawares they may slump. Barrow.