Main Entry: tho·rax

Pronunciation: \ˈthō(ə)r-ˌaks, ˈthȯ(ə)r-\

Function: noun

Inflected Form(s): plural tho·rax·es or tho·ra·ces \ˈthōr-ə-ˌsēz, ˈthȯr-\

1 : the part of the mammalian body that is situated between the neck and the abdomen and supported by the ribs, costal cartilages, and sternum ; also : thoracic cavity
2 : the middle of the three chief divisions of the body of an insect ; also : the corresponding part of a crustacean or an arachnid