The Collaborative International Dictionary of English v.0.48:

Buddle \Bud"dle\, n. [Prov. E., to cleanse ore, also a vessel
   for this purpose; cf. G. butteln to shake.] (Mining)
   An apparatus, especially an inclined trough or vat, in which
   stamped ore is concentrated by subjecting it to the action of
   running water so as to wash out the lighter and less valuable
   portions.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Buddle \Bud"dle\, v. i. (Mining)
   To wash ore in a buddle.
   [1913 Webster]