A cross brace on a train track (7)

I believe the answer is:

sleeper

(Other definitions for sleeper that I've seen before include "Rail track supporter" , "An overnight train?" , "Rail supporter; secret agent" , "Earring" , "One who slumbers" .)

I've seen this clue in The Irish Times.

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.