(Mining) A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed; also, one of the cleats, grooves, or steps in such a trough. Also called ripple.
![]() |
![]() |
![]() | ![]() | ![]() | |||
|
|
|
![]() |
"Riffle" Quotes from Famous Books ![]() ![]() — The Lovely Lady • Mary Austin ![]() ![]() — The Settling of the Sage • Hal G. Evarts ![]() ![]() — The Magnetic North • Elizabeth Robins (C. E. Raimond) ![]() ![]() — The Freebooters of the Wilderness • Agnes C. Laut ![]() ![]() — A Tramp's Notebook • Morley Roberts |
Copyright © 2025 Diccionario ingles.com |