'lockmaster' definitions:

Definition of 'lockmaster'

From: WordNet
noun
A worker in charge of a lock (on a canal) [syn: lockmaster, lockman, lockkeeper]

Definition of 'lockmaster'

From: GCIDE
  • lockmaster \lockmaster\ n. a worker in charge of a lock (on a canal).
  • Syn: lockman, lockkeeper. [WordNet 1.5] locknut