lockage

from WordNet (r) 3.0 (2006)

lockage
    n 1: a fee charged for passage through a lock in a canal or
         waterway
    2: a system of locks in a canal or waterway
    3: passage through a lock in a canal or waterway

from The Collaborative International Dictionary of English v.0.48

Lockage \Lock"age\, n.
   1. Materials for locks in a canal, or the works forming a
      lock or locks.
      [1913 Webster]

   2. Toll paid for passing the locks of a canal.
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   3. Amount of elevation and descent made by the locks of a
      canal.
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            The entire lock will be about fifty feet. --De Witt
                                                  Clinton.
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