chugga chugga
- choo chooChild's word for locomotive
- trainRail vehicle or instruct
- locomotiveRailway pulling machine
- steamHeated water's gaseous form
- engineMachine producing motion
tracks · rails · caboose · whistle · puffing · chugging · railroad · conductor · wheels · smoke · rumble · rhythm · toddler · Thomas · station · coal · freight · boxcar