
1) Bean 2) Class 3) Gurda 
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https://www.crosswordclues.com/clue/kidney

1) Bean shape 2) Bean type 3) Bean type or shape 4) Bean variety 5) Bean-shaped organ 6) English pie ingredient 7) Excretory organ 8) Exclusively Anglo word 9) Exclusively Saxon word 10) Organ made of nephrons 11) Pelvic organ 12) Pool shape 13) Renal organ 14) Shape of some swimming pools 15) Traditional Chinese medicine 
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• (n.) A glandular organ which excretes urea and other waste products from the animal body; a urinary gland. • (n.) Habit; disposition; sort; kind. • (n.) A waiter.
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http://thinkexist.com/dictionary/meaning/kidney/

One of two paired organs (normally) which lie at the back of the abdomen, in front of the lower ribs, and filter the blood to produce urine
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http://www.baus.org.uk/patients/glossary

in vertebrates and some invertebrates, organ that maintains water balance and expels metabolic wastes. Primitive and embryonic kidneys consist of ... [48 related articles]
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http://www.britannica.com/eb/a-z/k/30

One of a pair of organs in the abdomen. Kidneys remove waste from the blood (as urine), produce erythropoietin (a substance that stimulates red blood cell production), and play a role in blood pressure regulation.
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http://www.cancer.gov/dictionary?expand=K

One of a pair of organs in the abdomen. They filter waste products and excess water from the blood to produce urine. 
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http://www.encyclo.co.uk/local/20560

<anatomy> Two glands situated in the upper posterior abdominal cavity, one on either side of the vertebral column. ... The kidneys are shaped like two large beans, and act as a filter. The kidney function is to filter the blood and control the level of some chemicals in the blood such as hydrogen, sodium, potassium, and phosphate and they eli...
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http://www.encyclo.co.uk/local/20973

(kid´ne) either of the two bean-shaped organs in the lumbar region that filter the blood, excreting the end-products of body metabolism in the form of urine, and regulating the concentrations of hydrogen, sodium, potassium, phosphate, and other ions in the extracellular fluid. This small organ contains over a million mi...
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http://www.encyclo.co.uk/local/21001

one of the two kidney-bean-shaped organs located on both sides of the spine, just above the waist. They rid the body of waste materials and maintain fluid balance through the production of urine
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http://www.encyclo.co.uk/local/21166

(Humans as organisms) one of two organs in humans which extract impurities from the blood
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http://www.encyclo.co.uk/visitor-contributions.php

Kid'ney (kĭd'nȳ)  noun ;  plural  Kidneys (-nĭz). [ Middle English  kidnei ,  kidnere , from Icelandic  koiðr belly, womb (akin to Goth.  gipus , Anglo-Saxon  cwiþ womb) + Middle English  nere kidney; akin to Dutch  nier
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http://www.encyclo.co.uk/webster/K/8

One of two organs to the right and left of the lumbar region which filter waste products from the blood which are then excreted as urine.
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http://www.gadsbywicks.co.uk/uploaded/3822.pdf

(kid;ne)  One of a pair of organs of the urinary system that contains nephrons and that filters wastes from the blood in the formation of urine.
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http://www.mhhe.com/biosci/abio/glossary.mhtml

Kidneys are a pair of bean-shaped organs located at the back of the abdomen, which remove waste and extra fluid from the blood and pass them out of the body as urine.
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Either of the two bean-shaped organs in the lower abdominal cavity that are responsible for filtering toxic waste products from the blood, producing the important hormone erythroipoietin, and maintaining the body's water and electrolyte balance.
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http://www.thehorse.com/Glossary.xhtml?L=K

A kidney-shaped metal or rubber tool used for finishing pots on the wheel, made in press-moulds or by hand.
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https://ashbrook-ceramics.co.uk/pottery-glossary/

body organ that processes urine
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https://sciencetrek.org/sciencetrek/topics/water/glossary.cfm

An organ in the body which is used for excretion. The kidney filters the blood and removes waste, urea water and salts. 
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https://www.encyclo.co.uk/local/20687

(kidneys) There are two kidneys, right and left. They filter waste products out of the blood and make urine. The kidneys are very sensitive to blood flow and to some drugs. Doctors often take blood tests to check how well the kidneys are working.
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one of two organs that are part of the urinary tract; responsible for filtering the blood and removing waste products and excess water as urine 
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https://www.encyclo.co.uk/local/20875
 noun
 noun either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine; `urine passes out of the kidney through ureters to the bladder`
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https://www.encyclo.co.uk/local/20974
 Click images to enlarge
Click images to enlargeIn vertebrates, one of a pair of organs responsible for fluid regulation, excretion of waste products, and maintaining the ionic composition of the blood – in other words the regulation of the concentrations of some chemicals in the blood. The kidneys are situated on the rear wall of the abdome...
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https://www.encyclo.co.uk/local/21221

Gurda
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https://www.encyclo.co.uk/local/22537

either of a pair of bean-shaped organs in the back part of the abdominal cavity that form and excrete urine, regulate fluid and electrolyte balance, and act as endocrine glands. · a corresponding organ in other vertebrate animals or an organ of like function in invertebrates. · the meat of an animal's kidney used as food. · consti...
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https://www.infoplease.com/dictionary/kidney
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