DCHP-1 Online
sluice ((n.)) † Placer Mining, Hist. 
n. a long box or trough containing riffles (def. 2) by means of which gold is separated from gravel.
See also: riffle ((n.)) (def. 2) sluice-box
- 1869 The Indians fully bear out Price's own story . . . of the Indian taken . . . in the act of robbing their sluices.
- 1965 The sluice can be partially sunk in a stream and wedged with rocks.
- 1869 The Indians fully bear out Price's own story . . . of the Indian taken . . . in the act of robbing their sluices.