What is the meaning of د?

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

The eighth letter of the Arabic alphabet, called دَال (dāl) and written in the Arabic script; preceded by خ (ḵ) and followed by ذ (ḏ).

The fourth numeral symbol of the Arabic alphabet (traditional abjad order, used for list numbering), written in the Arabic script; preceded by ج (j) and followed by ه (h).

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

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

Used to prefix a non-past verb to mark the present continuous tense.

Intensifier, used to prefix imperative verbs to denote an emphatic meaning.

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

The fifth letter of the Kyrgyz alphabet, written in the Arabic script.

A letter of the Old Ruthenian alphabet, written in the Arabic script.

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

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

The eighth letter of the Kazakh alphabet, written in the Arabic script; preceded by ح and followed by ر.

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

Jawi spelling of di.‎ before consonant-initial words.

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

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The tenth letter of the Persian alphabet, called دال and written in the Arabic script; preceded by خ and followed by ذ.

The eleventh letter of the Punjabi alphabet, written in the Shahmukhi script; preceded by خ (xe) and followed by ڈ (ḍāl).

The nineteenth letter of the Sindhi alphabet, written in the Arabic script; preceded by خ and followed by ڌ.

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

The ninth letter of the Uyghur alphabet, written in the Arabic script; preceded by خ and followed by ر.

The third letter of the Yoruba alphabet, written in the Arabic script; preceded by ب and followed by عِ.

Source: wiktionary.org