from The Century Dictionary.
- noun A current in a channel caused by the alternation of the level of the water during the passage of the tide-wave.
Sorry, no etymologies found.
I hesitated to enter this passage, fearing that the slightest change in the tide-current might close it, but ventured nevertheless, judging that the dangers ahead might not be greater than those I had already passed.
A berg suddenly going to pieces is a grand sight, especially when the water is calm and no motion is visible save perchance the slow drift of the tide-current.