Nūn Ğunna

ں, (Arabic letter noon ghunna (U+06BA), ṇūṇ), is an additional letter of the Arabic script not used in the Arabic alphabet itself but used in Urdu, Saraiki and Shahmukhi Punjabi to represent a nasal vowel, [◌̃].

ں or ن٘ is a additional letter of the Arabic script. It is used in Urdu, Saraiki, Punjabi, Pashto, and many other Pakistani languages.[1]

It is a nasal vowel used in many Indo-Aryan languages and Iranian languages. It is represented by the International Phonetic Alphabet by the sound of ⟨◌̃⟩. It is a dotless noon. You have to say it with a nasal sound encircling your nose. In Saraiki and Balti, nūn ǧunna is sometimes written as ن٘.