/ˈbrestbəʊn ||; ˈbrɛstˈbon/noun [C] the long flat bone in the middle of your chest that the seven top pairs of curved bones(ribs)are connected to 胸骨（上面的七对肋骨与之相连） ☞A more formal word is sternum. 较正式的用语为sternum。 ☞picture at body 见 body 插图