Breast (noun)

1. Either of the two soft, rounded organs on the front of a woman's chest that produce milk after pregnancy.
2. Either of the corresponding organs on a man's chest.
3. The front of a person's chest, especially the upper part.

Origin:

Old english brēost, from proto-germanic *brustiz.

Examples:

1. She breast-fed her baby.
2. He had a lump on his breast that turned out to be cancer.
3. The bird has a distinctive red patch on its breast.
4. She was wearing a dress with a low-cut breast.
5. He pressed his hand against his breast in pain.