What does 🔳 mean. 🔳 Meaning: white square button emoji, button emoji, geometric emoji, outlined emoji, square emoji. White Square Button as emoji was first used in 2010 and belongs to the category Symbols - Geometric. Also in the above tables you will find 🔳 meaning, 🔳 code HTML, what image is used to represent this emoji, or some of the codes used in programming languages as string data to display 🔳 emoji.