cockhorse

名词 cockhorse:

1. anything used as a toy horse (such as a rocking horse or one knee of an adult)

cock.horse

n.（名词）
Something used as a toy horse, such as the knee of an adult or a rocking horse.
玩具马，摇摇马：用作玩具马的东西，例如成年人的膝或摇木马
A horse added to a team of horses to assist a wagon through high water or over difficult terrain.
马车之后的额外的马：加入一小组马的一匹马，帮助四轮运货马车通过深水或越过困难地形.

来源：
[Origin unknown]
[词源不明]