What is the meaning of Nn?

Alternative form of NN (“noon”).

there is no, there are no; introduces an independent negated existential clause

without; there not being any …; introduces a subordinated negated existential clause

not; negates an adverbial or adjectival sentence

not; negates a subjunctive main clause with future meaning

not; negates a nominal sentence

or not; contrasts with a preceding clause or phrase

A digraph in Irish orthography

Abbreviation of non (“not”).

Rōmaji transcription of んー

Alternative form of n (“not”)

Alternative form of n (“no”)

Source: wiktionary.org

See also