Remove soluble components from a material by percolating liquid

• Extract by leaching in soil, rock, or industrial processes

Of substances, to be washed out by percolating fluid

• Of liquid, to seep or bleed through a material

Historical: A tub or vat used to leach ashes, bark, or ore

• A leaching vessel for producing lye or extracts

Historical: A firm, jelly-like sweetmeat called leach

• A spiced milk gel dessert from medieval English cookery