reins

American  

[reynz] / reɪnz /

plural noun

1. the kidneys.

2. the region of the kidneys, or the lower part of the back.

3. (especially in Biblical use) the seat of the feelings or affections, formerly identified with the kidneys.

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reins British  

/ reɪnz /

plural noun

1. archaic the kidneys or loins

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Etymology

Origin of reins

before 1000; Middle English reines, reenes < Old French reins; compare Old English (once) rēnys; both < Latin rēnēs kidneys, loins (plural); cf. renal

Example Sentences

Tim Cook had a lot to prove when Apple co-founder Steve Jobs handed over the reins as chief executive nearly 15 years ago.

From Los Angeles Times • Apr. 22, 2026

What products or initiatives should Ternus prioritize as he takes the reins at Apple?

From The Wall Street Journal • Apr. 22, 2026

A mechanical engineer by background, who most recently has led hardware engineering for all of Apple’s products, Ternus takes Apple’s reins at a critical time in its history.

From The Wall Street Journal • Apr. 21, 2026

"The time is right for me to hand over the reins for the next phase of Air India's rise," said Wilson.

From BBC • Apr. 7, 2026

For effect, she gave a little shake on the leash ends of the TOT, just as if they were a set of reins attached to a pony’s bridle.

From "The Unseen Guest" by Maryrose Wood