noun
( -s )
1.
a. : the process or an instance of separating the soluble components from some material by percolation
b. : the process of extracting tannin by boiling ground-up bark or other vegetable tanning material in water
c. : the process or an instance of removing nutritive or harmful elements from soil by percolation
2. : a product of leaching
swamp water, colored by the leachings of gum, cypress, maple, and juniper — American Guide Series: North Carolina