The reverse button emoji depicts a triangular arrow pointing left.
Unicode: U+25C0 U+FE0F
The reverse button emoji represents a left-facing triangular arrow, often used to indicate going back or reversing an action. It can also symbolize revisiting a previous topic or undoing a change.
"Wait, ◀️ let me rethink that decision."
"Click the ◀️ button to go back to the previous page."
"I think we should ◀️ and discuss that point again."