dismount

名词 dismount:

1. the act of dismounting (a horse or bike etc.)

动词 dismount:

1. get off (a horse)
   同义词：unhorse, light, get off, get down

1. I had to dismount from my bicycle halfway up the hill.
   我骑到半山腰只得从脚踏车上下来。
2. He who rides on a tiger can never dismount.
   [谚]骑虎难下。
3. One have to dismount from an idea and get into saddle again at every parenthesis.
   每当遇上一个括号，就叫人不得不从一种想法下马，然后再次骑上马鞍。
4. Two soldiers dismounted the gun from the base.
   两个战士把炮从底座上卸下来。

dis.mount

v.（动词）
dis.mount.ed,dis.mount.ing,dis.mounts
v.intr.（不及物动词）
To get off or down, as from a horse or vehicle.
下马，下车：离开或向下，如从马或车辆上
v.tr.（及物动词）
To remove from a support, setting, or mounting.
从支撑物、底板、底座取下，卸下
To unseat or throw off, as from a horse.
使下（马），使掉下（马）
To disassemble (a mechanism, for example).
拆开（机器等）
n.（名词）

The act or manner of dismounting, especially from a horse.
摔下，下马，下车：下来的动作或方式，尤指下马
Sports A move in gymnastics whereby the gymnast gets off an apparatus or completes a floor exercise, typically landing on both feet.
【体育运动】 下；下法：体操运动中的一个动作，凭借这个动作，体操运动员从鞍马上跳下或完成自由体操运动，一般是双脚落地

来源：
Probably alteration of obsolete French desmonter [to unseat]
可能为 已废法语 desmonter的变化 [使退位，使摔下马]
des- [dis-]
des- [表示.除去，分离.的意思]
monter [to mount] * see mount
monter [骑上，登上] *参见 mount

【引伸】
dismount.able
adj.（形容词）