What is the meaning of Đ?

Alternative form of d̶.

A voiced interdental plosive.

A letter of the Brahui alphabet, written in the Latin script.

The eighth letter of the Jarai alphabet, written in the Latin script.

The ninth letter of the Skolt Sami alphabet, written in the Latin script.

A letter of the Slovene alphabet, written in the Latin script, used primarily in loanwords from Serbo-Croatian.

The name of the Latin script letter Đ/đ.

Phonetic transcription of sound [d̞].

A letter of the North Frisian alphabet, written in the Latin script.

The seventh letter of the Northern Sami alphabet, written in the Latin script.

The eighth letter of the Serbo-Croatian alphabet (gajica), written in the Latin script; preceded by dž and followed by e.

A letter of the Sicilian alphabet, written in the Latin script.

The seventh letter of the Vietnamese alphabet, called đê or đờ and written in the Latin script.

Source: wiktionary.org