1) Canal toll 
• (n.) Amount of elevation and descent made by the locks of a canal. • (n.) Toll paid for passing the locks of a canal. • (n.) Materials for locks in a canal, or the works forming a lock or locks.
Lock'age noun 1. Materials for locks in a canal, or the works forming a lock or locks. 2. Toll paid for passing the locks of a canal. 3. Amount of elevation and descent made by the locks of a canal. « The entire lock will be about fifty feet.» De Witt ...
[n] - a fee charged for passage through a lock in a canal or waterway 2. [n] - a system of locks in a canal or waterway 3. [n] - passage through a lock in a canal or waterway
noun passage through a lock in a canal or waterway
the construction, use, or operation of locks, as in a canal or stream. · passage through a lock or locks. · a toll paid for such passage.