kidney

noun
kid·​ney | \ ˈkid-nē \
plural kidneys

Definition of kidney

1a : one of a pair of vertebrate organs situated in the body cavity near the spinal column that excrete waste products of metabolism, in humans are bean-shaped organs about 4¹/₂ inches (11¹/₂ centimeters) long lying behind the peritoneum in a mass of fatty tissue, and consist chiefly of nephrons by which urine is secreted, collected, and discharged into a main cavity whence it is conveyed by the ureter to the bladder
b : any of various excretory organs of invertebrate animals
2 : the kidney of an animal eaten as food
3 : sort or kind especially with regard to temperament a nice helpful guy, of a different kidney entirely from the … Secret Police— Paula Lecler

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Examples of kidney in a Sentence

a patient with a damaged kidney her new boyfriend is of a different kidney than what she usually dates

Recent Examples on the Web

She was hospitalized soon after the announcement following surgery to treat a kidney condition and spent several weeks out of the public eye recuperating before resuming a public schedule. Darlene Superville, The Seattle Times, "First lady taking ‘Be Best’ children’s campaign on the road," 23 July 2018 Dear Dan, My brother has kidney failure, and the transplant wait list for deceased donors is too long to help him in time. Dan Ariely, WSJ, "Bigger Gifts Aren’t Always Better," 4 Jan. 2019 Your body does a clutch job of detoxing all on its own—that's precisely what your liver, kidneys, and intestines are for. Zahra Barnes, SELF, "10 Apple Cider Vinegar Facts to Know Before You Drink It," 1 Jan. 2019 The British bayonets were triangular in shape, ensuring that even if the 18-inch blade did not puncture a vital organ, at least one facet of the weapon would always be slicing near a heart, a kidney, a liver. Peter Cozzens, WSJ, "‘Valley Forge’ Review: In the Bleak Midwinter," 21 Dec. 2018 Such cultures also have been used to create miniature versions of eyes, guts, livers, kidney, prostates, and several other organs. David Grossman, Popular Mechanics, "Scientists Re-create Baby Brain Readings in a Dish," 19 Nov. 2018 Gilman was shot in the back; the bullet punctured a lung, lacerated her spleen and a kidney, broke two ribs and lodged 2 millimeters from her spinal cord. Fox News, "Living with fear: Vegas shooting survivor, wife march on," 27 Sep. 2018 In rare cases, E. coli infections can be serious and lead to complications, such as hemolytic uremic syndrome, which can cause kidney failure and even death. Sarah Jacoby, SELF, "Cauliflower Recalled for Possible E. Coli Contamination," 18 Dec. 2018 Just brushing up against the plant and then grooming the pollen off can cause kidney failure, let alone taking an actual bite. Caroline Picard, Good Housekeeping, "5 Holiday Plants That Are Way More Toxic Than Poinsettias to Cats and Dogs," 14 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'kidney.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of kidney

14th century, in the meaning defined at sense 1a

History and Etymology for kidney

Middle English

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Statistics for kidney

Last Updated

22 Feb 2019

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Time Traveler for kidney

The first known use of kidney was in the 14th century

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More Definitions for kidney

kidney

noun

English Language Learners Definition of kidney

: either of two organs in your body that remove waste products from your blood and make urine
: an animal kidney used as food

kidney

noun
kid·​ney | \ ˈkid-nē \
plural kidneys

Kids Definition of kidney

: either of a pair of organs near the backbone that give off waste from the body in the form of urine and in humans are bean-shaped

kidney

noun
kid·​ney | \ ˈkid-nē \
plural kidneys

Medical Definition of kidney

1 : one of a pair of vertebrate organs situated in the body cavity near the spinal column that excrete waste products of metabolism, in humans are bean-shaped organs about 4¹/₂ inches (11¹/₂ centimeters) long lying behind the peritoneum in a mass of fatty tissue, and consist chiefly of nephrons by which urine is secreted, collected, and discharged into the renal pelvis whence it is conveyed by the ureter to the bladder — compare mesonephros, metanephros, pronephros
2 : any of various excretory organs of invertebrate animals

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More from Merriam-Webster on kidney

Rhyming Dictionary: Words that rhyme with kidney

Thesaurus: All synonyms and antonyms for kidney

Spanish Central: Translation of kidney

Nglish: Translation of kidney for Spanish Speakers

Britannica English: Translation of kidney for Arabic Speakers

Britannica.com: Encyclopedia article about kidney

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