Definition & Meaning of "newsgroup"in English

What is a "newsgroup"?

A newsgroup is an online discussion forum where people can post messages and participate in discussions about specific topics. These groups are organized by subject, making it easy for users to find and join conversations that interest them. Newsgroups function similarly to online forums or message boards, but they typically operate through a system known as Usenet. Members can read posts, reply to others, and share information or opinions. While newsgroups were more popular in the past, they still exist as a way to communicate and share content on a variety of subjects.