I'll meet you at the subway station! This sign can usually be found in big cities and serves as a guide in local public transport. Because subways, outside of Germany usually called Metro, run underground. This sign indicates where a station is located.
Learn more about the meaning
Emoji History
Development of the emoji in the Unicode lexicon
First included
The emoji “Circled M” was approved as part of Unicode 6.0 in 2010 and added to Emoji 0.6.