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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
In contacting several larger handlers of nonferrous scrap, many say they have quit trying to comprehend the market and instead are focused on keeping a tight rein on the movement of material.
Daily cash reports can be extremely valuable in keeping a tight rein on a business's accounts receivable system.