noun
a worker in charge of a lock (on a canal)
• Syn: ↑lockman, ↑lockkeeper
• Hypernyms: ↑skilled worker, ↑trained worker, ↑skilled workman
* * *
\\ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷\ noun : a person who immediately directs the operation of a lock (as of a canal)
lockmaster … relays word to the control tower that we are ready to start our lift — J.H.Winchester
Useful english dictionary. 2012.