a type of toy motor commonly found in toy cars and other vehicles, where the motion of the toy is generated by the friction between the wheels and the surface it moves on, without the need for batteries or external power sources
文法情報
有生性の状態
無生物
形態的構成
複合語
可算
複数形
friction motors
例
I showed my nephew how to wind up his friction motor toy and let it go, and he was amazed by how far it went.
