foe这个单词具体用法是什么？

FOE

1. =Fraternal Order of Eagles 战斗机老牌驾驶员兄弟会

n.

1. 敌人,仇敌

This is the most serious challenge from his political foe.

这是来自他政敌的最严重的挑战。

2. 敌军

3. 反对者[(+of/to)]

4. 危害物[(+to)]

Tobacco is a foe to health.

抽烟危害健康。