noun
kidney
KID-nee/ˈkɪdni/
A paired organ that filters blood to form urine.
Your kidneys filter waste from your blood and produce urine.

Etymology
Middle English kidenere already named the organ, but its origin is unknown. A suggested combination meaning “womb” and “egg” would allude to the organ’s shape; that explanation remains uncertain.
In context
a healthy liver so what happens when you don't empty out your urine what happens to your kidneys bad things you get the calcium deposits kidney stones kidney stones
More examples
- She donates a kidney to her brother.
- The scan shows a small stone in his left kidney.
- The kidneys help control the amount of water in your body.
Forms
kidney · kidneys