leach 
(lēch)
(lēch)v. leached, leach·ing, leach·es
v.tr.
1. To remove soluble or other constituents from by the action of a percolating liquid: heavy rains that leached the soil of minerals.
2. To remove from a substance by the action of a percolating liquid: acids in groundwater that leach calcium out of the bedrock.
3. To empty; drain: "a world leached of pleasure, voided of meaning" (Marilynne Robinson).
v.intr.
To be dissolved or passed out by a percolating liquid.
n.
1. The act or process of leaching.
2. A porous, perforated, or sievelike vessel that holds material to be leached.
3. The substance through which a liquid is leached.
[From Middle English leche, leachate, from Old English *lece, muddy stream; akin to leccan, to moisten.]
leach′a·bili·ty n.
leacha·ble adj.
leacher n.