Leach Leach, v. t. [imp. & p. p. {Leached}; p. pr. & vb. n. {Leaching}.] [Written also leech and letch.] 1. To remove the soluble constituents from by subjecting to the action of percolating water or other liquid; as, to leach ashes or coffee. [1913 Webster]

2. To dissolve out; -- often used with out; as, to leach out alkali from ashes. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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