Definition of a Farmer
A farmer is a person who works in the field of agriculture, growing crops and raising livestock, in order to produce food and other products for human consumption.

Role of a Farmer
The main role of a farmer is to cultivate the land and grow crops to produce food and other products. This involves a range of tasks, including:

- Ploughing the field to prepare it for planting
- Sowing seeds or planting seedlings
- Irrigating the crops to ensure they have enough water
- Applying fertilizers and pesticides to protect the crops from pests and diseases
- Harvesting the crops when they are ready
- Caring for livestock, such as feeding and watering them, and ensuring their health and wellbeing

Importance of Farmers
Farmers play a vital role in society by producing the food and other products that we need to survive. Without farmers, we would not have access to fresh fruits and vegetables, meat, dairy products, and other essential items. In addition to producing food, farmers also help to protect the environment by using sustainable farming practices that minimize the impact on the land and natural resources.

Conclusion
In conclusion, a person who ploughs the field is called a farmer. Farmers play a crucial role in society by producing the food and other products that we need to survive and by using sustainable farming practices to protect the environment.