1855,Proceedings of the Royal Philosophical Society of Glasgow:
I then took a piece of dry stone, ground it fine in a mortar, and placed the powder in water, the sand particles sunk rapidly to the bottom, while the clay remained suspended, and by severalwashings and decantings the sand and clay could be approximately separated[…]
2013, Robin Wall Kimmerer,Braiding Sweetgrass, 1st edition, Milkweed Editions,→ISBN, page74:
[…] Hazel telling about how she liked a good woodpile, especially when she used to take inwashing to earn a little extra. She needed a goodly pile to fuel her washtubs.
(countable, often in the plural) Theresidue after anore, etc, has been washed
Thewashings have a higher concentration of metal
The liquid used to wash an ore.
A place where aprecious metal found ingravel is separated from lighter material by washing.