[1] : The Collaborative International Dictionary of English v.0.48

dump \dump\ du^mp, 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. to knock heavily; to stump. prov. eng. --halliwell.
      1913 webster

   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. u.s. --bartlett.
      1913 webster

   dumping car or dumping 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.
      1913 webster
see also:
dumped dumping dump dumping car dumping cart dump car 
dump cart 

[2] : WordNet (r) 2.0

dumping
     n : selling goods abroad at a price below that charged in the
         domestic market

Dumping >> D Words
Dumping, definition of term: Dumping
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