Meaning
A square button with an outlined frame, the counterpart of 🔳 with the colours reversed. It represents a square button, a checkbox or an empty frame.
It suits unticked checkboxes in to-do lists, simple diagrams and minimalist decoration: “🔲 Laundry 🔲 Groceries ☑️ Pay rent” Because 🔲 and 🔳 look almost alike and their names can feel backwards, pick whichever looks better on your screen.