from The Century Dictionary.

  • noun In railroading, a lock for controlling the ends of the track-rails at the edge of a drawbridge, where the rail-ends must be raised before the draw can be opened. It locks the rails in their raised position and at the same time locks all train-signals against the bridge until the bridge is closed and the rails are lowered.


Sorry, no etymologies found.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.