lockmaster

from WordNet (r) 3.0 (2006)
lockmaster
    n 1: a worker in charge of a lock (on a canal) [syn:
         {lockmaster}, {lockman}, {lockkeeper}]
from The Collaborative International Dictionary of English v.0.48
lockmaster \lockmaster\ n.
   a worker in charge of a lock (on a canal).

   Syn: lockman, lockkeeper.
        [WordNet 1.5] locknut
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