rein

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rein

1. one of a pair of long straps, usually connected together and made of leather, used to control a horse, running from the side of the bit or the headstall to the hand of the rider, driver, or trainer
2. the direction in which a rider turns (in phrases such as on a left (or right) rein, change the rein)
3. on a long rein with the reins held loosely so that the horse is relatively unconstrained
4. shorten the reins to take up the reins so that the distance between hand and bit is lessened, in order that the horse may be more collected
References in periodicals archive ?
"I've reined it right in and the treatment I had helped me see being destructive is not the answer."
Ominously growing presidential power must be reined in.
Reined in, Trump might make an effective public servant: the next Democratic administration could call him on his promise to give something back and appoint him to head a Works Project Administration of build a bullet train.