A skull and crossbones displayed on a black flag, used on pirate ships, also known as a Jolly Roger.
The Pirate Flag emoji is a ZWJ sequence combining ? Black Flag, Zero Width Joiner and ☠️ Skull and Crossbones. These display as a single emoji on supported platforms.
Pirate Flag was added to Emoji 11.0 in 2018.
U+1F3F4
U+200D
U+2620
U+FE0F
?☠️ Waving black flag
?☠️ Zero width joiner
?☠️ Skull and crossbones
?☠️ Variation selector-16