from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One who is in charge of a lock on a waterway. Also called lockmaster.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The person assigned to look after a canal or river lock, operating it and organizing its maintenance.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a worker in charge of a lock (on a canal)
lock + keeper (Wiktionary)