from The Century Dictionary and Cyclopedia
- n. A canal-lock which lifts a boat confined in it by flotation from one level to a higher level when water is allowed to flow into the lock.
Sorry, no etymologies found.
As there will be no lift-lock, (and only the tide regulating lock,) there will be no difficulty in continuing to dredge and deepen the passage, after the canal is in regular use.
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