plural kidneys
1
: either of two organs in your body that remove waste products from your blood and make urine
a patient with a damaged kidney
—often used before another nounkidney failure
a kidney transplant
2
: an animal kidney used as food
steak and kidney pie
Cite this Entry
“Kidney.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/kidney. Accessed 16 Apr. 2026.
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