- The definition of neap is a type of tide that happens just after the first and third quarters of the lunar cycle when the low tides are higher and the high tides are lower.
An example of neap is weaker tides present in the oceans.
Origin: Middle English neep from Old English nep- inch(es) nepflod, neap tide
Origin: prob. from ON, as inch(es) Norwegian dialect, dialectal neip, forked pole
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