expel

remove, eliminate, dismiss, expel

这些动词均有“开除，驱出，去掉”之意。
remove: 普通用词，不带任何感情色彩。
eliminate: 通常指例行的、有步骤地去掉某物或某人。
dismiss: 既可指突然地迅速地排除，也可指解雇或开除。
expel: 多指强行解除公职或驱出住地。

动词 expel:

1. force to leave or move out
   同义词：throw out, kick out
2. put out or expel from a place
   同义词：eject, chuck out, exclude, throw out, kick out, turf out, boot out, turn out
3. remove from a position or office
   同义词：oust, throw out, drum out, boot out, kick out
4. cause to flee
   同义词：rout, rout out
5. eliminate (substances) from the body
   同义词：discharge, eject, release

1. The headmaster decided to make an example of the pupil and expel him from the school.
   校长决定开除该生以儆效尤。
2. The bullet was expelled from the gun.
   子弹从枪中射出。
3. He was expelled from the school.
   他被学校开除了。

ex.pel

v.tr.（及物动词）
ex.pelled,ex.pel.ling,ex.pels
To force or drive out:
赶走：驱逐或把…赶出去：
例句：
expel an invader.
把侵略者赶出去

To discharge from or as if from a receptacle:
排出：从容器里或象从容器里释放：
例句：
expelled a sigh of relief.
显出减缓的征兆

To force to leave; deprive of membership:
被迫离开；把…除名：
例句：
expelled the student from college for cheating.See Synonyms at eject
因为作弊而开除那个学生的大学学籍参见 eject

来源：
Middle English expellen
中古英语 expellen
from Latin expellere
源自 拉丁语 expellere
ex- [ex-]
ex- [前缀，表.从前的，前任的.]
pellere [to drive] * see pel- 5
pellere [驾驶] *参见 pel- 5

【引伸】
expel.lable
adj.（形容词）
expel.ler
n.（名词）