Definitions:

1. a device that retards something's motion noun
   • the car did not have proper restraints fitted
2. a rule or condition that limits freedom noun
   • legal restraints
3. discipline in personal and social activities noun
   • I was a model of polite restraint.
4. lack of ornamentation noun
   • the room was simply decorated with great restraint
5. the act of controlling by restraining someone or something noun
   • the unlawful restraint of trade
6. the state of being physically constrained noun
   • dogs should be kept under restraint

Synonyms:

• chasteness
• constraint
• control