yard slug
Noun
Meaning
yard slug (plural yard slugs)
(rail transport) A slug (locomotive accessory) designed for switching; it has a low body, and no cab, in order to allow an engineer or driver in a powered unit to the rear to see past it.
Noun
yard slug (plural yard slugs)
(rail transport) A slug (locomotive accessory) designed for switching; it has a low body, and no cab, in order to allow an engineer or driver in a powered unit to the rear to see past it.