What is the meaning of ع?

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

The eighteenth letter of the Arabic alphabet, written in the Arabic script; preceded by ظ (ẓ) and followed by غ (ḡ).

Z, unknown variable.

The sixteenth numeral symbol of the Arabic alphabet (traditional abjad order, used for list numbering), written in the Arabic script; preceded by س (s) and followed by ف (f).

second-person masculine singular imperative of وَعَى (waʕā)

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

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

The thirty-first letter of the Khowar alphabet, written in the Arabic script; preceded by ظ and followed by غ.

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

alternative form of عَلَى (ʕala)

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

The twenty-first letter of the Ottoman Turkish alphabet, called عين (ʿayın) and written in the Arabic script; preceded by ظ and followed by غ.

alternative form of على (ʕala)

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

The eighteenth letter of the Egyptian Arabic alphabet, called عين and written in the Arabic script.

alternative form of على (ʕala)

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

The thirteenth letter of the Kazakh alphabet, written in the Arabic script; preceded by ش (š) and followed by ف (f).

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

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

The twenty-first letter of the Persian alphabet, called عین and written in the Arabic script; preceded by ظ and followed by غ.

The twenty-fourth letter of the Punjabi alphabet, written in the Shahmukhi script; preceded by ظ (z̤ōē) and followed by غ (ġain).

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

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

Source: wiktionary.org