What is the meaning of Ö?

a front mid rounded vowel (IPA [ø]).

an extremely short or fleeting ö.

A dictionary transcription for the THOUGHT vowel

(in words like coöperate) see ◌̈

The twenty-second letter of the Azerbaijani alphabet, written in the Latin script.

A letter of the Danish alphabet

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

A letter of the Kobon alphabet.

night

water (flowing)

The twenty-ninth letter of the Estonian alphabet, written in the Latin script.

The twenty-eighth letter of the Finnish alphabet, called öö and written in the Latin script.

The twenty-sixth letter of the Hungarian alphabet, called ö and written in the Latin script.

The thirty-second letter of the Icelandic alphabet, written in the Latin script.

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

The letter o with the umlaut.

The last letter of the Swedish alphabet, pronounced /øː/ when long, /œ/ when short, [œ̞ː] when long and before r, and [œ̞] when short and before r.

island, isle (piece of land surrounded by water)

The nineteenth letter of the Turkish alphabet, called ö and written in the Latin script.

The name of the Latin-script letter Ö/ö.

The nineteenth letter of the Turkmen alphabet, called ö and written in the Latin script.

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

The letter O, marked for its syllabic pronunciation distinct from adjacent vowels.

Source: wiktionary.org