Three horse Russian transport (6)

I believe the answer is:

troika

(Other definitions for troika that I've seen before include "Russian vehicle drawn by three horses abreast" , "Russian horse-drawn vehicle" , "Three-horse sleigh" , "Russian three-horse carriage" , "Russian vehicle pulled by three horses" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.