What is the meaning of گ?

an additional Arabic letter that is sometimes used to write foreign names and loanwords with the phoneme IPA: /ɡ/.

A letter of the Azerbaijani alphabet, written in the Arabic script; preceded by ک and followed by ل.

The thirty-sixth letter of the Balti alphabet, written in the Arabic script.

The thirty-sixth letter of the Burushaski alphabet, written in the Arabic script.

The thirty-eighth letter of the Khowar alphabet, written in the Arabic script; preceded by ك and followed by ل.

A letter of the Kyrgyz alphabet, written in the Arabic script.

The thirty-fifth letter of the Kashmiri alphabet, written in the Arabic script; preceded by کھ and followed by ل.

The seventeenth letter of the Kazakh alphabet, written in the Arabic script; preceded by ك and followed by ڭ.

The twenty-sixth letter of the Persian alphabet, called گاف and written in the Arabic script; preceded by ک and followed by ل.

The twenty-ninth letter of the Punjabi alphabet, written in the Shahmukhi script; preceded by ک (kāf) and followed by ل (lām).

The forty-second letter of the Sindhi alphabet, written in the Arabic script; preceded by ک and followed by ڳ.

The twenty-fourth letter of the Somali alphabet, written in the Arabic script; preceded by ك and followed by ل.

The twenty-ninth letter of the Urdu alphabet, written in the Arabic script; preceded by ک and followed by ل.

The nineteenth letter of the Uyghur alphabet, written in the Arabic script; preceded by ك and followed by ڭ.

Source: wiktionary.org