A hand held up showing its palm. May be used to mean stop, or as a high-five.
Raised Hand was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.
✋ High Five
The Raised Hand emoji supports skin tone modifiers. A yellow (or other non-human) skin tone should be shown by default, unless an emoji modifier is applied.
Platforms without support for emoji modifiers display a missing symbol character (box with a cross, alien, or question mark in it) next to any modified emoji.