0 If a tooth or your hair falls out, it becomes loose and separates from your mouth or head. -- (牙齿或头发)脱落,掉落
1 to argue with someone and stop being friendly with them -- 吵架;失和
2 If soldiers fall out, they move out of a line. -- 原地解散;离开队列
"Fall out, men!" shouted the sergeant-major. “原地解散!”军士长喊道。