• Webster's Revised Unabridged Dictionary
    • n Cascalho A deposit of pebbles, gravel, and ferruginous sand, in which the Brazilian diamond is usually found.
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Century Dictionary and Cyclopedia
    • n cascalho Gravel, coarse or fine, mixed with more or less sand; detrital material in general; the material in which Brazilian diamonds are found, as also gold to some extent.
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Webster's Revised Unabridged Dictionary
Pg., a chip of stone, gravel


In literature:

In the dry part of the river the extraction of the sand, stones, and cascalho is done solely by hand.
"Scientific American Supplement, No. 458, October 11, 1884" by Various
After the cascalho had been thus purified, it was carefully removed to the shed to be finally washed.
"Martin Rattler" by R.M. Ballantyne