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Added 9 October 2026

kidney

/ˈkɪdni/ noun

In Latin: rēn Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about kidney at Wordnik → Where our words come from →

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

Origin

From Middle English kideney, kydeney, alteration of earlier kidenere (“kidney”) after ey (“egg”), of obscure origin and formation. Probably a compound consisting of Middle English *kidde (“sack”) + Middle English nere (“kidney”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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