from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A locomotive sent ahead of a train to check the track for safety and clearance.
from the GNU version of the Collaborative International Dictionary of English
- n. a locomotive going in advance of a train to make sure that the way is clear.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a locomotive that precedes a train to check the track
Sorry, no etymologies found.