choo-choo

American  

[choo-choo] / ˈtʃuˌtʃu /

noun

1. a train.

2. the sound of a steam locomotive.

---

verb (used without object)

choo-chooed, choo-chooing

1. to make a sound like that made by a steam locomotive.

2. to travel by train.

choo-choo British  

/ ˈtʃuːˌtʃuː /

noun

1. a child's name for a railway train

---

Etymology

Origin of choo-choo

First recorded in 1900–05; imitative

Example Sentences

Then, she is on her way, leading a "choo-choo train" formed by a line of delighted children, sprinkling humour, happiness and even a little hope, but not the real aid they so desperately need.

From BBC • Feb. 1, 2026

Ryan stands up and picks out a “Lego choo-choo train.”

From New York Times • Jan. 5, 2022

“He’s like a choo-choo train. It’s just, ‘Choo choo!'”

From Seattle Times • Dec. 30, 2021

This is white-tablecloth Yemeni cooking disguised as mall food, and my mind is racing faster than that choo-choo doing laps next to me.

From Washington Post • Oct. 18, 2021

Rev. Owens’s sermons started like a tiny choo-choo train and ended up like a roaring locomotive.

From "The Color of Water: A Black Man's Tribute to His White Mother" by James McBride