What is the meaning of м?

A letter of the Cyrillic script, called em.

A letter of the Old Cyrillic script, called myslite or myslete.

The thirty-sixth letter of the Abaza alphabet, written in the Cyrillic script.

The thirtieth letter of the Abkhaz alphabet, written in the Cyrillic script.

The thirtieth letter of the Adyghe alphabet, written in the Cyrillic script.

The twenty-second letter of the Aghul alphabet, written in the Cyrillic script.

The nineteenth letter of the Alutor alphabet, written in the Cyrillic script.

The fiftieth letter of the Archi alphabet, written in the Cyrillic script.

The fourteenth letter of the Buryat alphabet, written in the Cyrillic script.

The sixteenth letter of the Chukchi alphabet, written in the Cyrillic script.

The twentieth letter of the Dargwa alphabet, written in the Cyrillic script.

The sixteenth letter of the Dungan alphabet, written in the Cyrillic script.

The fourteenth letter of the Eastern Mari alphabet, written in the Cyrillic script.

The fourteenth letter of the Even alphabet, written in the Cyrillic script.

The fourteenth letter of the Evenki alphabet, written in the Cyrillic script.

The nineteenth letter of the Ingush alphabet, written in the Cyrillic script.

The twentieth letter of the Itelmen alphabet, written in the Cyrillic script.

The thirtieth letter of the Kabardian alphabet, written in the Cyrillic script.

The sixteenth letter of the Khakas alphabet, written in the Cyrillic script.

The seventeenth letter of the Kumyk alphabet, written in the Cyrillic script.

The fourteenth letter of the Kyrgyz alphabet, called эм (em), and written in the Cyrillic script.

The nineteenth letter of the Lezgi alphabet, written in the Cyrillic script.

The twentieth letter of the Nivkh alphabet, written in the Cyrillic script.

The eighteenth letter of the Northern Mansi alphabet, written in the Cyrillic script.

The fifteenth letter of the Orok alphabet, written in the Cyrillic script.

The fifteenth letter of the Southern Altai alphabet, written in the Cyrillic script.

The twentieth letter of the Tabasaran alphabet, written in the Cyrillic script.

The fourteenth letter of the Tundra Nenets alphabet, written in the Cyrillic script.

The fifteenth letter of the Western Mari alphabet, written in the Cyrillic script.

The sixteenth letter of the Yakut alphabet, called эм (em), and written in the Cyrillic script.

The twenty-first letter of the Avar alphabet, written in the Cyrillic script.

The seventeenth letter of the Azerbaijani alphabet, written in the Cyrillic script.

The seventeenth letter of the Bashkir alphabet, written in the Cyrillic script.

The fourteenth letter of the Belarusian alphabet, written in the Cyrillic script.

The thirteenth letter of the Bulgarian alphabet, called мъ (m), and written in the Cyrillic script.

The nineteenth letter of the Chechen alphabet, written in the Cyrillic script.

The sixteenth letter of the Chuvash alphabet, written in the Cyrillic script.

The sixteenth letter of the Crimean Tatar alphabet, written in the Cyrillic script.

The seventeenth letter of the Kalmyk alphabet, written in the Cyrillic script.

The seventeenth letter of the Kazakh alphabet, written in the Cyrillic script.

The sixteenth letter of the Macedonian alphabet, written in the Cyrillic script.

m (meter/metre)

The fourteenth letter of the Mongolian alphabet, called эм (em), and written in the Cyrillic script.

A letter of the Old Church Slavonic alphabet, called мꙑслите (myslite), and written in the Old Cyrillic script.

The nineteenth letter of the Ossetian alphabet, written in the Cyrillic script.

The fourteenth letter of the Moldovan alphabet, written in the Cyrillic script.

The fourteenth letter of the Russian alphabet, called эм (em), and written in the Cyrillic script.

abbreviation of метр (metr, meter)

abbreviation of милли- (milli-, milli-)

abbreviation of мужско́й род (mužskój rod, masculine gender)

The fifteenth letter of the Serbo-Croatian alphabet, written in the Cyrillic script.

masculine gender

meter (unit of length)

The seventeenth letter of the Tajik alphabet, written in the Cyrillic script.

The sixteenth letter of the Tatar alphabet, written in the Cyrillic script.

The fourteenth letter of the Tuvan alphabet, written in the Cyrillic script.

The seventeenth letter of the Udmurt alphabet, written in the Cyrillic script.

The seventeenth letter of the Ukrainian alphabet, called ем (em), and written in the Cyrillic script.

The fourteenth letter of the Uzbek alphabet, written in the Cyrillic script.

Source: wiktionary.org