rein
noun
Often a leather strap, fastened to each end of the bit of a bridle, by which the rider or driver controls a horse or other animal by pulling so as to exert pressure on the bit.
reined
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past participleof rein.past participle
A verb form used in perfect and passive verb constructions and that can also function as a modifier.
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past tense formof rein.past tense
Used to describe completed actions or previous habitual actions.
reinnounOften a leather strap, fastened to each end of the bit of a bridle, by which the rider or driver controls a horse or other animal by pulling so as to exert pressure on the bit.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Watch: "Great" or "alarming" - Should AI be reined in?
From BBC ● Sep. 15, 2026
"It's a very serious issue. It's a virus that's spread through society. Comedy, jokes and films have normalised swearing and it needs to be reined in," he says.
From BBC ● Aug. 26, 2026
As so many staff left these labs and research centers after their projects were reined in or canceled, the upheaval is likely to linger, the scientists, many of them based in Boulder, warn.
From Barron's ● Jun. 1, 2026
Chanel Robinson achieved exactly what the gold rush of blockbuster weight-loss drugs promised: She lost nearly 100 pounds, lowered her cholesterol to normal levels and reined in her polycystic ovary syndrome.
From The Wall Street Journal ● May 17, 2026
Little Walder cast his splintered lance aside, spied Bran, and reined up.
From "A Clash of Kings" by George R.R. Martin
