A play-pause icon, showing a right-pointing triangle (play) next to a double vertical bar (pause).
Play or Pause Button was approved as part of Unicode 6.0 in 2010 under the name “Black Right-Pointing Triangle with Double Vertical Bar” and added to Emoji 1.0 in 2015.
U+23EF
U+FE0F
⏯️ Black right-pointing triangle with double vertical bar
⏯️ Variation selector-16