What is the meaning of ط?

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

The sixteenth letter of the Arabic alphabet, written in the Arabic script; preceded by ض (ḍ) and followed by ظ (ẓ).

The ninth numeral symbol of the Arabic alphabet (traditional abjad order, used for list numbering), written in the Arabic script; preceded by ح (ḥ) and followed by ي (y).

The twenty-ninth letter of the Balti alphabet, written in the Arabic script.

The twenty-ninth letter of the Burushaski alphabet, written in the Arabic script.

The twenty-ninth letter of the Khowar alphabet, written in the Arabic script; preceded by ض and followed by ظ.

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

The twenty-second letter of the Xiao'erjing abjad, written in the Arabic script.

The twenty-seventh letter of the Kashmiri alphabet, written in the Arabic script; preceded by ض (z) and followed by ظ (z).

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

The twenty-sixth letter of the Pashto alphabet, written in the Arabic script; preceded by ض and followed by ظ.

The nineteenth letter of the Persian alphabet, called طا and written in the Arabic script; preceded by ض and followed by ظ.

The twenty-second letter of the Punjabi alphabet, written in the Shahmukhi script; preceded by ض (ẓwāt) and followed by ظ (z̤ōē).

The thirty-third letter of the Sindhi alphabet, written in the Arabic script; preceded by ض and followed by ظ.

The twenty-second letter of the Urdu alphabet, written in the Arabic script; preceded by ض and followed by ظ.

Source: wiktionary.org