fifth rib meaning in English

第五肋

But amasa took no heed to the sword that was in joab ' s hand : so he smote him therewith in the fifth rib , and shed out his bowels to the ground , and struck him not again ; and he died
撒下20 : 10亚玛撒没有防备约押手里所拿的刀、约押用刀刺入他的肚腹、他的肠子流在地上、没有再刺他、就死了。
And when abner was returned to hebron , joab took him aside in the gate to speak with him quietly , and smote him there under the fifth rib , that he died , for the blood of asahel his brother
撒下3 : 27押尼珥回到希伯仑、约押领他到城门的瓮洞、假作要与他说机密话、就在那里刺透他的肚腹、他便死了这是报杀他兄弟亚撒黑的仇。
Howbeit he refused to turn aside : wherefore abner with the hinder end of the spear smote him under the fifth rib , that the spear came out behind him ; and he fell down there , and died in the same place : and it came to pass , that as many as came to the place where asahel fell down and died stood still
撒下2 : 23亚撒黑仍不肯转开、故此押尼珥就用枪?刺入他的肚腹、甚至枪从背后透出亚撒黑就在那里仆倒而死众人赶到亚撒黑仆倒而死的地方、就都站住。