🁑

🁑

1. A domino tile, the 4-4.
   • 2016, Miguel Lugo, Competitive Dominoes: How to Play Like a Champion - Second Edition (in English), Dog Ear Publishing, →ISBN, page 4:

     For example, these tiles comprise the suit of 4s:

     🁿 🂀 🂁 🂂 🂃 🂄 🂅

     Notice that one of these tiles, the 🁑, has a 4 in each side: this is called a “double” tile.