Nay is a commune in the Manche department in Normandy in north-western France.
Toponymy The town name is first attested under the forms Nas, Naei, without date.
According to Albert Dauzat, there are two possible etymologies:
Either *Nadium () from the Gallic msculine name *Nadius; From the Gaulish words novio (‘new’) and *ialo- (‘field, clearing’; cognate to Yale and Yell, Shetland).
The name in local dialect is Nayons.
See also Communes of the Manche department
References