lockage

名词 lockage:

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

lock.age

n.（名词）
The passage of a ship through a lock.
船只通过水闸
A toll paid for the use of a lock.
水闸通行税：为使用一个水闸而交的费用
A system of locks.
水闸系统