Torso, Abdomen, Waist
noun
The kanji and the word are exactly the same. That means they share meanings as well.
どう
The reading is the same as the one you learned with the kanji.
剣道の試合で、コウイチは竹刀で相手の胴を完璧に討ち取りました。
In a kendo match, Koichi hit the lower part of the opponent’s torso perfectly with his bamboo sword.