choo-choo

名词 choo-choo:

1. a child's word for locomotive

choo-choo

n.Informal （名词）【非正式用语】
pl. choo-.choos
A locomotive train.
火车机头

来源：
[From baby-talk imitation of the sound of a locomotive whistle]
[From baby-talk imitation of the sound of a locomotive whistle]