lockmaster
/ˈlɑkˌmæstər/
noun
- A person who operates and maintains a lock on a canal or waterway, controlling the water levels to allow boats to pass through.
- Every morning, the lockmaster checks the water levels before allowing any boats through.
- The lockmaster waved a flag to signal that the lock was ready for the next vessel.
- The lockmaster opened the gates to let the barge enter the lock chamber.
Synonyms