What is the meaning of ذ?

The tenth letter of the Acehnese alphabet, written in the Arabic script.

The ninth letter of the Arabic alphabet, called ذَال (ḏāl) and written in the Arabic script; preceded by د (d) and followed by ر (r).

The twenty-fifth numeral symbol of the Arabic alphabet (traditional abjad order, used for list numbering), written in the Arabic script; preceded by خ (ḵ) and followed by ض (ḍ).

The eighteenth letter of the Balti alphabet, written in the Arabic script.

The eighteenth letter of the Burushaski alphabet, written in the Arabic script.

The ninth letter of the Hijazi Arabic alphabet, written in the Arabic script; preceded by د (dāl) and followed by ر (rāʔ).

The seventeenth letter of the Khowar alphabet, written in the Arabic script; preceded by ڈ and followed by ر.

alternative spelling of ذي (ḏī)

The twelfth letter of the Xiao'erjing abjad, written in the Arabic script.

The seventeenth letter of the Kashmiri alphabet, written in the Arabic script; preceded by ڈ and followed by ر.

The tenth letter of the Malay alphabet, written in the Arabic script.

The fifteenth letter of the Pashto alphabet, written in the Arabic script; preceded by ډ and followed by ر.

The eleventh letter of the Persian alphabet, called ذال (zâl) and written in the Arabic script; preceded by د and followed by ر.

The thirteenth letter of the Punjabi alphabet, written in the Shahmukhi script; preceded by ڈ (ḍāl) and followed by ر (re).

The twenty-fourth letter of the Sindhi alphabet, written in the Arabic script; preceded by ڍ and followed by ر.

The thirteenth letter of the Urdu alphabet, written in the Arabic script; preceded by ڈ and followed by ر.

Source: wiktionary.org