DUMP (3)

Dump (?), v. t. [imp. & p. p. Dumped (?); p. pr. & vb. n. Dumping.] [[OE. dumpen to throw down, fall down, cf. Icel. dumpa to thump, Dan. dumpe to fall suddenly, rush, dial. Sw. dimpa to fall down plump. Cf. Dump sadness.]] 1. 1. To knock heavily; to stump. Halliwell.
2. 2. To put or throw down with more or less of violence; hence, to unload from a cart by tilting it; as, to dump sand, coal, etc. Bartlett.
Dumping car or cart, a railway car, or a cart, the body of which can be tilted to empty the contents; — called also dump car, or dump cart.