Meaning
A pushpin with a round colored head and a sharp point, the kind used on cork boards. It means pinning something, marking it as important or keeping it in place.
It is used to flag pinned posts, key announcements, reminders and must-read info: โ๐ Pinned: group rules and the meeting link are here.โ It can mark locations too, though ๐ is the one usually tied to maps.