- a trench, cut through a placer or through bedrock, through which a stream is diverted in order to dislodge and wash the gravel.
Origin of ground sluice
First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ground sluice
After the dirt has all been put through the ground-sluice, it is cleaned up in a short board-sluice, or a tom.Hittel on Gold Mines and Mining
John S. Hittell