leach

LEACH, v.t. [See leak. Perhaps L. lix may be from the same root.]

To wash, as ashes, by percolation, or causing water to pass through them, and thus to separate from them the alkali. The water thus charged with alkali, is called lye.

LEACH, n. A quantity of wood ashes, through which water passes, and thus imbibes the alkali.