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noun

Riffle n.

(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.

A ripple in a stream or current of water; also, a place where the water ripples, as on a shallow rapid. (Local, U. S.) "The bass have left the cool depth beside the rock and are on the riffle or just below it."

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Etymology of 'Riffle'

Collaborative International Dictionary of English 0.48

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"Riffle" Quotes from Famous Books

... the head of the sluice-box and gave directions how they should turn off the most of the water, wash down the "toilings" very low, lift up the "riffle," brush down the "apron," and finally set the pan in the lower end of the "sluice-toil" and pour in the quicksilver to gather up and ...

— Our Boys - Entertaining Stories by Popular Authors • Various

... in the sluice-boxes by false bottoms of various kinds. It would not do to leave the smooth boards, for the water would sweep all the gold away, and the boards themselves would soon be worn through. The most common false bottom is the longitudinal riffle-bar, which is from two to four inches thick, from three to seven inches wide, and six feet long. Two sets of these riffle-bars go into each sluice-box, the box being twice as long as the bar. A set of riffle-bars is as many as fill one half of a box. They are wedged in, from an inch to two ...

— Hittel on Gold Mines and Mining • John S. Hittell

... young man, whose breadth of shoulder and elasticity of step might have been a boy's, spoke first with an amused riffle in ...

— The Tyranny of Weakness • Charles Neville Buck

... the man to submit tamely to such indignities. He had groped and found his old 45-70 riffle, that made a noise like a young cannon and kicked like a broncho cow. While the shack lurched this way and that, Patsy pointed the gun toward the greatest disturbance and fired. He did not think: he hit anybody, but he apologized to Irish for missing and blamed the darkness for the misfortune. ...

— The Flying U's Last Stand • B. M. Bower

... remarked the other, confidently; "but that's my long suit, you ought to know. Never yet did git lost, an' I reckon I ain't a-goin' to do it now. I'll lay it all out and make the riffle, don't you worry ...

— The Banner Boy Scouts Snowbound - A Tour on Skates and Iceboats • George A. Warren

Words linked to "Riffle" : wavelet, wave, turn up, flux, moving ridge, fold up, flick, shuffle, mix, make, leaf, card game, undulate, flip