What does "neap" mean?

Neap: The tongue or pole of a cart or other vehicle drawn by two animals. [U.S.]

Additional senses

  1. 2.Low. Neap tides, the lowest tides of the lunar month, which occur in the second and fourth quarters of the moon; -- opposed to spring tides.
  2. 3.A neap tide. High springs and dead neaps. Harkwill.

Sources