Mastodon
Noun · Hacker Culture
Definitions
An open source federated social networking platform whose independently run servers interoperate through ActivityPub. Mastodon became one of the most visible entry points into the fediverse and a common refuge from centralized social networks.
In plain English: A decentralized social networking platform made up of many connected servers.
Example: "A lot of security researchers shifted their daily posting from X to Mastodon."