Noun
part of an insect''s body that bears the wings and legs

Noun
the part of the human body between the neck and the diaphragm or the corresponding part in other vertebrates

Noun
the middle region of the body of an arthropod between the head and the abdomen

n.
The part of the trunk between the neck and the abdomen, containing that part of the body cavity the walls of which are supported by the dorsal vertebrae, the ribs, and the sternum, and which the heart and lungs are situated; the chest.

n.
The middle region of the body of an insect, or that region which bears the legs and wings. It is composed of three united somites, each of which is composed of several distinct parts. See Illust. in Appendix. and Illust. of Coleoptera.

n.
The second, or middle, region of the body of a crustacean, arachnid, or other articulate animal. In the case of decapod Crustacea, some writers include under the term thorax only the three segments bearing the maxillipeds; others include also the five segments bearing the legs. See Illust. in Appendix.

n.
A breastplate, cuirass, or corselet; especially, the breastplate worn by the ancient Greeks.

Thorax

The part of the trunk between the neck and the abdomen, containing that part of the body cavity the walls of which are supported by the dorsal vertebr'91, the ribs, and the sternum, and which the heart and lungs are situated; the chest.