Plastic is a material which is produced from oil by a chemical process and which is used to make many objects. It is light in weight and does not break easily.

If you describe something as plastic, you mean that you think it looks or tastes unnatural or not real.

If you use plastic or plastic money to pay for something, you pay for it with a credit card instead of using cash.

Something that is plastic is soft and can easily be made into different shapes.