from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A railroad employee in charge of a yard.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A railroad employer who is in charge of a railway yard.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a railroad employer who is in charge of a railway yard
compound yard + master (Wiktionary)