abdomen

US /ˈæb.də.mən/
UK /ˈæb.də.mən/
"abdomen" picture
1.

the part of the body of a mammal between the thorax and the pelvis; the belly.

:
He felt a sharp pain in his abdomen.
The doctor examined her abdomen carefully.
2.

the posterior part of the body of an arthropod, especially the segments of the body behind the thorax in insects, spiders, and crustaceans.

:
The bee's abdomen contains its sting.
Spiders have two main body parts: the cephalothorax and the abdomen.