Definition of leach

• n. - See 3d Leech.
• n. - A quantity of wood ashes, through which water passes, and thus imbibes the alkali.
• n. - A tub or vat for leaching ashes, bark, etc.
• v. t. - To remove the soluble constituents from by subjecting to the action of percolating water or other liquid; as, to leach ashes or coffee.
• v. t. - To dissolve out; -- often used with out; as, to leach out alkali from ashes.
• v. i. - To part with soluble constituents by percolation.
• n. - See Leech, a physician.