As an interjection nah
is eye dialect of lang=en.
As a noun nan is
affectionate name for a grandmother.
As a proper noun Nan is
{{given name|female|diminutive=Ann}} and Nancy.
As an initialism NAN is
NMDA Antagonist Neurotoxicity.
nah
English
Anagrams
*
----
nan
English
Etymology 1
Possibly derived from a (etyl) language.
Noun
(
en noun)
(British) Affectionate name for a grandmother.
Synonyms
* nana
* nanna
Etymology 2
From (etyl) .