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kid·ney

Audio Help [kid-nee] Pronunciation Key

–noun, plural -neys.

1.	Anatomy. 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.

2.	Zoology. a corresponding organ in other vertebrate animals or an organ of like function in invertebrates.

3.	the meat of an animal's kidney used as food.

4.	constitution or temperament: He was a quiet child, of a different kidney from his boisterous brothers.

5.	kind, sort, or class: He is only at ease with men of his own kidney.

[Origin: 1275–1325; ME kidenei, kidenere (sing.), kideneres, kideneren (pl.); orig. uncert.; perh. a compound based either on nere (sing.), neres (pl.) kidney (OE *néore; cf. OHG nioro, ON nȳra); or ei (sing.), eiren (pl.) egg¹, OE ǣg (sing.), ǣgru (pl.) (by assoc. with the organ's shape); for the first element cf. dial. kid pod (akin to cod²)

]

—Related forms

kid·ney·like, adjective

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