tho·rax noun \ˈthō(ə)r-ˌaks, ˈthȯ(ə)r-\
plural tho·rax·es or tho·ra·ces \ˈthōr-ə-ˌsēz, ˈthȯr-\
: 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
: the middle of the three chief divisions of the body of an insect; also : the corresponding part of a crustacean or an arachnid
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