Leach
Pronunciation
- UK enPR: lÄ“ch, IPA: /liËtʃ/
- Homophones: leech
- Rhymes: -iËtʃ
Origin
From Middle English leche ("leachate"), from Old English *lǣċ, *lǣċe ("muddy stream"), from Proto-Germanic *lēkijŠ("a leak, drain, flow"), from Proto-Germanic *lēk-, *lak-, *likaną ("to leak, drain"), from Proto-Indo-European *leg(')- ("to leak"). Cognate with Old English leċċan ("to water, moisten"), Old English lacu ("stream, pool, pond"). More at leak, lake.
Full definition of leach
Noun
leach
(plural leaches)- A quantity of wood ashes, through which water passes, and thus imbibes the alkali.
- A tub or vat for leaching ashes, bark, etc.
- 1894, Robert Barr, In the Midst of Alarms, ch. 7:"This is the leach," said Kitty, pointing to a large, yellowish, upright wooden cylinder, which rested on some slanting boards, down the surface of which ran a brownish liquid that dripped into a trough.
- (nautical) Alternative spelling of leech
Verb
- (transitive) To purge a soluble matter out of something by the action of a percolating fluid.Heavy rainfall can leach out minerals important for plant growth from the soil.
- 21 April 2014, Mary Keen, You can still teach an old gardener new tricks: Even the hardiest of us gardeners occasionally learn useful new techniques [print version: Gardening is always ready to teach even the hardiest of us a few new tricks, 19 April 2014], The very wet winter will have washed much of the goodness out of the soil. Homemade compost and the load of manure we get from a friendly farmer may not be enough to compensate for what has leached from the ground.
- (intransitive) To part with soluble constituents by percolation.
Usage notes
Do not confuse this verb with the verb leech.