The word "breast" refers to the front part of the body between the neck and the abdomen, particularly the region that contains the mammary glands in females, which are responsible for producing milk. It can also refer to the chest area in general, encompassing both men and women. In a broader sense, "breast" can be used metaphorically to represent emotions or feelings, such as "a heavy heart" implying sorrow.
The word "breast" comes from the Old English word "brĒ£ost," which is related to the Proto-Germanic "*brusts" and is connected to various words in other Germanic languages. Its root meaning has maintained a connection to the anatomy of the chest throughout its evolution.