#1 leach n. [leaching] the process of leaching. wn
#2 leach v. cause (a liquid) to leach or percolate. wn
#3 leach v. [percolate] permeate or penetrate gradually; "the fertilizer leached into the ground". wn
#4 leach v. [strip] remove substances from by a percolating liquid; "leach the soil". wn
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