Define tranquillizers and give one example.

Explanation

**Step-by-Step Solution:**

1. **Definition of Tranquilizers:**
Tranquilizers are a class of drugs that are primarily used to reduce anxiety, fear, tension, and agitation. They help in calming the mind and are often prescribed to manage mental pressure and stress-related disorders.

2. **Function of Tranquilizers:**
These drugs work by acting on the central nervous system to produce a calming effect. They can help alleviate symptoms of anxiety and promote relaxation, making them useful in various therapeutic settings.

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