Learner's definition of RESTRAINT
1 [count], somewhat formal : a way of limiting, controlling, or stopping something — usually plural — often + on 2 [count], formal : a device that limits a person's movement 3 [noncount] : control over your emotions or behavior
His angry response showed a lack of restraint.
The government has acted with restraint in dealing with this crisis.
You should exercise restraint.
4 [noncount], formal : physical force that prevents someone from moving