Leach tub, a wooden tub in which ashes are leached.
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.
2. To dissolve out; -- often used with out; as, to leach out alkali
from ashes.
Leach, v. i. To part with soluble constituents by percolation.