Restraint (noun)

1. The action of holding back or limiting something.
2. The action of preventing someone or something from doing something.
3. The action of controlling or suppressing one's own feelings or behaviour.

Origin:

Late middle english: from old french, from latin restrain(t-) "held back", from the verb restringere (see restrain).

Examples:

1. Exercise restraint in your spending.
2. The restraint of trade.
3. The restraint of the prisoners.
4. The restraint of the dog by a leash.
5. He showed great restraint in the face of provocation.