A more thorough explanation:

Definition: To drop something down, especially in a heap or to sell products at an extremely low price, specifically to sell products in a foreign market at a lower price than at home.

1. The garbage truck came to dump the trash in the landfill.

2. The company decided to dump their old inventory at a clearance sale.

3. The country was accused of dumping steel in the international market at a lower price than at home.

The first example illustrates the act of physically dropping something down, while the second and third examples illustrate the act of selling products at a lower price. In the second example, the company is getting rid of their old inventory by selling it at a clearance sale, which is a common practice in retail. In the third example, the country is accused of dumping steel in the international market at a lower price than at home, which is considered unfair competition and can harm domestic industries.