What is the meaning of ň?

The letter n with a háček.

The twenty-second letter of the Czech alphabet, written in the Latin script.

Hanyu Pinyin reading of 嗯

Hanyu Pinyin reading of 㕶

The twenty-sixth letter of the Slovak alphabet, written in the Latin script.

The seventeenth letter of the Turkmen alphabet, called eň and written in the Latin script.

Source: wiktionary.org