WordGarden.iokidney
B2Pronunciation
UK
- /kˈɪdni/
US
- /ˈkɪdni/
Meanings
Noun
either of the two organs that filter waste from the blood and make urine
the kidneys of an animal used as food
Beyond the definition
Imagine your body as a busy city. The kidneys are like the sanitation department, always working to clean up waste and keep everything running smoothly. These bean-shaped organs sit on either side of your spine, just below the ribs. They filter your blood to remove waste and extra water, which then becomes urine. Without healthy kidneys, waste builds up in the body and can make you very sick. You usually have two because this job is so important. We often talk about someone having "kidney problems" when these essential filters are not working well.
The kidney is a fascinating and crucial organ in the human body—and in many animals too! Shaped like a bean and roughly the size of your fist, kidneys are responsible for filtering waste products from the blood. Think of them as a highly sophisticated cleaning system. Blood enters the kidneys, where tiny filters (called nephrons) remove toxins, excess water, and other impurities. These filtered wastes become urine, which is then transported to the bladder for elimination.
But kidneys do much more than just filter waste! They also help regulate blood pressure, balance electrolytes like sodium and potassium, and produce hormones that are essential for red blood cell production and bone health. Because of these varied functions, kidney disease can have far-reaching effects on overall health.
The phrase "to give someone a kidney" refers to the life-saving procedure of kidney donation—where one person voluntarily donates a kidney to another whose own kidneys are failing. It is a testament to the incredible resilience and generosity of the human spirit. You might also hear of a "kidney stone," which is a hard mineral deposit that forms inside the kidneys and can cause intense pain.
So, while you may not think about them often, your kidneys are silent heroes working tirelessly behind the scenes to keep you healthy and functioning at your best!
Examples
- 1
Medical tests
The doctor ordered a blood test to check her kidneys.
- 2
Infection
He was taken to hospital with a kidney infection.
- 3
Chronic illness
My uncle has kidney disease, so he has to be careful about his diet.
- 4
Kidney stone
A kidney stone can cause sudden, severe pain.
More examplesFewer examples
- 5
Transplant
She received a kidney transplant last year.
- 6
Food
Add a can of kidney beans to the soup.
- Phrasekidney beans
red or dark beans often used in cooking
- 7
Shape
The hotel pool was kidney-shaped, with a narrow curve in the middle.
- Phrasekidney-shaped
curved like a kidney
See also
Forms and spellings
2 forms open this card.
Main spelling
- kidneynoun
Forms
- kidneyspluralnoun