| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024leach1 (lēch),USA pronunciation v.t. - Chemistryto dissolve out soluble constituents from (ashes, soil, etc.) by percolation.
- Chemistryto cause (water or other liquid) to percolate through something.
v.i. - Chemistry(of ashes, soil, etc.) to undergo the action of percolating water.
- Chemistryto percolate, as water.
n. - Chemistrythe act or process of leaching.
- Chemistrya product or solution obtained by leaching;
leachate. - Chemistrythe material leached.
- Chemistrya vessel for use in leaching.
- late Middle English leche leachate, infusion, probably Old English *læc(e), *lec(e), akin to leccan to wet, moisten, causative of leak 1425–75
- Invertebrates, Nautical, Naval Termsleech3.
Collins Concise English Dictionary © HarperCollins Publishers:: leach /liːtʃ/ vb - to remove or be removed from a substance by a percolating liquid
- to lose or cause to lose soluble substances by the action of a percolating liquid
n - the act or process of leaching
- a substance that is leached or the constituents removed by leaching
- a porous vessel for leaching
Etymology: 17th Century: variant of obsolete letch to wet, perhaps from Old English leccan to water; related to leakˈleacher n leech1 /litʃ/USA pronunciation n. [countable]- Invertebratesa bloodsucking worm once used widely for letting out blood in medical treatments.
- a person who clings to another for personal gain;
parasite. v. - to cling to and feed upon, drain, use up (someone, or someone's resources): [~ + object]Her companion leeched her of all the money she had.[no object]constantly leeching from his relations.
WordReference Random House Unabridged Dictionary of American English © 2024leech1 (lēch),USA pronunciation n. - Invertebratesany bloodsucking or carnivorous aquatic or terrestrial worm of the class Hirudinea, certain freshwater species of which were formerly much used in medicine for bloodletting.
- a person who clings to another for personal gain, esp. without giving anything in return, and usually with the implication or effect of exhausting the other's resources;
parasite. - [Archaic.]an instrument used for drawing blood.
v.t. - to apply leeches to, so as to bleed.
- to cling to and feed upon or drain, as a leech:His relatives leeched him until his entire fortune was exhausted.
- [Archaic.]to cure;
heal.
v.i. - to hang on to a person in the manner of a leech:She leeched on to him for dear life.
- bef. 900; Middle English leche, Old English lǣce; replacing (by confusion with leech2) Middle English liche, Old English lȳce; cognate with Middle Dutch lieke; akin to Old English lūcan to pull out, Middle High German liechen to pull
- 2.See corresponding entry in Unabridged bloodsucker; extortioner; sponger.
leech2 (lēch),USA pronunciation n. [Archaic.]- a physician.
- bef. 1150; Middle English leche, Old English lǣce; cognate with Old Saxon lāki, Old High German lāhhi, Gothic lēkeis; akin to Old Norse lǣknir
- Nautical, Naval Termseither of the lateral edges of a square sail.
- Nautical, Naval Termsthe after edge of a fore-and-aft sail. See diag. under sail.
Also, leach. - 1480–90; earlier lek, leche, lyche; akin to Dutch lijk leech, Old Norse līk nautical term of uncertain meaning
- Biographical Margaret, 1893–1974, U.S. historian, novelist, and biographer.
Collins Concise English Dictionary © HarperCollins Publishers:: Leach /liːtʃ/ n - Bernard (Howell). 1887–1979, British potter, born in Hong Kong
Collins Concise English Dictionary © HarperCollins Publishers:: leech /liːtʃ/ n - any annelid worm of the class Hirudinea, which have a sucker at each end of the body and feed on the blood or tissues of other animals
- a person who clings to or preys on another person
- an archaic word for physician
- (in combination): leechcraft
vb - (transitive) to use leeches to suck the blood of (a person), as a method of medical treatment
Etymology: Old English lǣce, lœce; related to Middle Dutch lieke leech, leach /liːtʃ/ n - the after edge of a fore-and-aft sail or either of the vertical edges of a squaresail
Etymology: 15th Century: of Germanic origin; compare Dutch lijk |