<p><strong>Verb (used with object)</strong></p><ul><li>to dissolve out soluble constituents from (ashes, soil, etc.) by percolation</li><li>to cause (water or other liquid) to percolate through something</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>(of ashes, soil, etc.) to undergo the action of percolating water</li><li>to percolate, as water</li></ul><p><strong>Noun</strong></p><ul><li>the act or process of leaching</li><li>a product or solution obtained by leaching; leachate</li><li>the material leached</li><li>a vessel for use in leaching</li></ul>