The 🌙 meaning is Crescent Moon. A typical crescent, which is displayed in yellow or gray depending on the platform. But what is the 🌙 meaning in a text message and how do you use this emoji correctly? It’s late in the evening and you want to go to bed but your girlfriend keeps writing you messages? Then you could write: “Can we talk about it tomorrow – it’s already late 🌙” The emoji was added to Unicode 6.0 in 2010 and to Emoji 1.0 in 2015.