What is the meaning of ん?

The hiragana syllable ん (n). Its equivalent in katakana is ン (n). It is the forty-eighth syllable in the gojūon order.

: negative form of verbs

: volitional form of verbs

contraction of の (no)

added to female names or parts of them to express affection

(locative marker) in; to; for; at

Source: wiktionary.org