Definition of "rein" in English

noun

1. A strap or rope attached to a bridle or bit, used to control a horse, animal or young child.

2. (figurative) An instrument or means of curbing, restraining, or governing.

   • The government is attempting to keep a rein on rising prices.

verb

1. (transitive) To direct or stop a horse by using reins.

2. (transitive) To restrain; to control; to check.

3. (intransitive) To obey directions given with the reins.

noun

1. (now rare, archaic, chiefly in plural) A kidney.

2. The inward impulses; the affections and passions, formerly supposed to be located in the area of the kidneys.