thorax
US /ˈθɔːr.æks/
UK /ˈθɔːr.æks/
1.
the part of the body of a mammal between the neck and the abdomen, including the cavity enclosed by the ribs, breastbone, and dorsal vertebrae, and containing the chief organs of circulation and respiration; the chest.
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The surgeon made an incision in the patient's thorax.
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The impact caused severe damage to his thorax.
2.
the middle section of the body of an insect, between the head and the abdomen, bearing the legs and wings.
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The insect's legs are attached to its thorax.
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The wings of the butterfly emerge from its thorax.